MedWorm.com provides a medical RSS filtering service. Over 6000 RSS medical sources are combined and output via different filters. This feed contains the latest items from the 'Clinical Physiology and Functional Imaging' source. Thu, 09 Feb 2012 03:37:28 +0100 http://www.medworm.com/index.php?rid=5651943&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2012.01122.x SummaryMaximal exercise test with gas exchange measurement evaluates exercise capacities with maximal oxygen uptake (VO2max) measurement. Measurements of lactate (L), lactate/pyruvate ratio (L/P) and ammonium (A) during rest, exercise and recovery enhance interpretative power of maximal exercise by incorporating muscular metabolism exploration. Maximal exercise test with gas exchange measurement is standardized in cardiopulmonary evaluations but, no reference data of blood muscular metabolites are available to evaluate the muscular metabolism. We determined normal values of L, L/P and A during a standardized maximal exercise and recovery in 48 healthy sedentary volunteers and compared with results obtained in four patients with exercise intolerance and a mitochondrial disease. In healthy s... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5651943 Fri, 03 Feb 2012 08:02:39 +0100 5651943 http://www.medworm.com/index.php?rid=5631449&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01115.x SummaryThe skeletal muscle system can adapt to an external stimulus from either physiological or pathological conditions. This plasticity is measured by imaging techniques such as magnetic resonance imaging or ultrasound. The anatomical cross‐sectional area of a muscle is one of the muscle architecture parameters that relates to the maximum muscle strength. The aim of this study was to determine the reliability of anatomical cross‐sectional area rectus femoris measurements, obtained by ultrasound, with two different protocols. Acquisition of four anatomical cross‐sectional area images of the right rectus femoris in two distinct regions (15 cm above the patella and 50% of the thigh length) was performed in 2 days, from a group of 15 young healthy subjects. The cross‐sectional ar... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5631449 Tue, 24 Jan 2012 05:00:00 +0100 5631449 http://www.medworm.com/index.php?rid=5631448&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01117.x Conclusion:  The SDFV ratio was related to established markers of both vasodilation and arterial compliance, and to global atherosclerosis. Future larger studies have to evaluate whether the SDFV ratio is related to global atherosclerosis independently of traditional risk factors. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5631448 Tue, 24 Jan 2012 05:00:00 +0100 5631448 http://www.medworm.com/index.php?rid=5612531&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2012.01119.x Conclusion:  Our study characterizes on a phase‐by‐phase basis the AP and RR interval responses to MM, documents their great similarity to those corresponding to VM and establishes that MM exerts a 50% smaller impact on the cardiovascular autonomic function than VM. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5612531 Wed, 18 Jan 2012 05:00:00 +0100 5612531 http://www.medworm.com/index.php?rid=5640080&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01118.x Conclusion:  Transcranial Doppler helps to determine whether an ICA stenosis is of hemodynamic significance and to assess collateral patterns. Established collateral blood flow will help to identify patients with ≥70% (ECST) carotid artery disease. TCD might be of value when flow velocity criteria combined with plaque assessment by DUS are inclusive. Other diagnostic methods may also be considered. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5640080 Sun, 01 Jan 2012 05:00:00 +0100 5640080 http://www.medworm.com/index.php?rid=5631447&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2012.01120.x Conclusion:  Long‐term EECP can improve endothelial function partially by an increased endothelial shear stress in hypercholesterolaemic porcine model. This implies that long‐term EECP can be used as a complementary therapeutic strategy to prevent atherosclerosis in hypercholesterolaemic patients. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5631447 Sun, 01 Jan 2012 05:00:00 +0100 5631447 http://www.medworm.com/index.php?rid=5612530&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2012.01121.x Conclusions: These results may benefit populations that cannot sustain the mechanical stress of high‐intensity exercise or low‐intensity exercise that requires a longer sustained time under tension. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5612530 Sun, 01 Jan 2012 05:00:00 +0100 5612530 http://www.medworm.com/index.php?rid=5586592&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01116.x Conclusion:  Antegrade and mean SR immediately following running exercise are dependent upon exercise intensity. Reductions in oscillatory and retrograde SR after treadmill running are not dependent on exercise intensity or duration and appear to last <1 h. Collectively, SR profiles following exercise are differentially altered based on the dose of exercise performed. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5586592 Sun, 01 Jan 2012 05:00:00 +0100 5586592 http://www.medworm.com/index.php?rid=5554109&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01076.x Conclusion:  As there was no evident increase in blood flow distribution at ankle and mid‐foot level with age, we suggest the use of pooled data from both age groups. Subsequently, the confidence interval for the relative distribution of blood flow at ankle level is 37/63 and 33/67 at mid‐foot level. For blood pool, the corresponding intervals are 43/57 and 40/60, respectively. Blood flow distribution appears to be influenced by the presence of PF, whereas blood pool distribution is not. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5554109 Sun, 01 Jan 2012 05:00:00 +0100 5554109 http://www.medworm.com/index.php?rid=5554112&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01077.x Conclusions:  The technique enables almost continuous recording of abdominal oedema formation and may be a valuable tool in experimental research, with the potential to be applied in the clinic. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5554112 Wed, 28 Dec 2011 05:00:00 +0100 5554112 http://www.medworm.com/index.php?rid=5554111&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01078.x SummaryThe purpose of the study was to investigate the effect of interval training combined with a thigh cuffs pressure of +90 mmHg on maximal and submaximal cycling performance. Twenty untrained individuals were assigned either to a control (CON) or to an experimental (CUFF) training group. Both groups trained 3 days per week for 6 weeks at the same relative intensity; each training session consisted of 2‐min work bout at 90% of : 2‐min active recovery bout at 50% of . An incremental exercise test to exhaustion, a 6‐min constant‐power test at 80% of (Sub80) and a maximal constant‐power test to exhaustion (TF150) were performed pre‐ and post‐training. Despite the unchanged , both groups significantly increased peak power output (CON: ∼12%, CUFF: ∼20%) that was accom... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5554111 Wed, 28 Dec 2011 05:00:00 +0100 5554111 http://www.medworm.com/index.php?rid=5554110&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01079.x Conclusion:  The STN‐DBS operated patients have a significant postoperative weight gain, as a result of a decrease in free‐living energy expenditure concomitant with an insufficient decrease in energy intake. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5554110 Wed, 28 Dec 2011 05:00:00 +0100 5554110 http://www.medworm.com/index.php?rid=5489407&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01071.x SummaryWe assessed the acute impact of physical exercise on the retinal vessel diameter and the regulation of vasoconstriction and vasodilatation owing to flicker that has never been examined before. Forty young (mean age 24 years) healthy subjects (26 women and 14 men) had retinal examinations with dynamic vessel analysis prior and after (0·5, 1·5 and 2·5 h) intense exercise of 20 min. The measurements were always taken on continuous same eye, each with a 350‐s permanent dynamic vascular analysis including three cycles of 20 s with 12·5‐Hz flicker provocation of the retinal vessel analyser system (RVA) device. Blood pressure values were measured before and after the dynamic vessel analysis with a portable, automatic blood pressure monitor. Dynamic vessel analysis revealed ... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5489407 Thu, 08 Dec 2011 05:00:00 +0100 5489407 http://www.medworm.com/index.php?rid=5489406&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01075.x SummaryThe purpose of this study was to compare the muscle hypertrophic response in women during both the follicular (FP) and the luteal phase (LP) of their menstrual cycles following short‐term, low‐intensity resistance training combined with blood flow restriction (BFR). Eight eumenorrheic women and five men, all previously untrained, performed unilateral low‐intensity (30% of 1 repetition maximum) dumbbell curl training with BFR once a day for 6 days. The opposite arm served as an untrained control. This 6‐day training programme was conducted during both menstrual cycle phases: the early FP and the mid LP. MRI‐measured biceps muscle volume (MV) and isometric elbow flexion strength were measured in both arms before and 2 days after the final training bout. Significantly (P&... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5489406 Thu, 08 Dec 2011 05:00:00 +0100 5489406 http://www.medworm.com/index.php?rid=5461061&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01070.x SummaryThe aim of the study was to evaluate the cardiac autonomic activity in free diving (FD) athletes. Thirteen Greek male free divers (group I, aged 33·4 ± 6·3 years, 6·6 ± 4·5 years of training experience) volunteered to participate while 13 age‐matched sedentary subjects served as control group (group II). All subjects were submitted to ambulatory 24‐h ECG recording for heart rate variability (HRV) analysis on a day of regular activities with no exercise or training. The results showed that group I had significantly lower minimum and mean heart rate by 23·9% (P<0·001) and 20·6% (P<0·001), respectively. All the measured time and frequency domain indices of HRV which reflect cardiac parasympathetic activity were higher in group I than in group II by 37·6... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5461061 Mon, 28 Nov 2011 05:00:00 +0100 5461061 http://www.medworm.com/index.php?rid=5391849&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01063.x In conclusion, our new automated method was able to quantify rCBF‐SPECT images and create normal values in ranges as expected. Further studies are needed to assess the clinical value of this method and the normal values. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5391849 Tue, 08 Nov 2011 05:00:00 +0100 5391849 http://www.medworm.com/index.php?rid=5489405&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01074.x This study investigated the association between Isokinetic peak torque (PT) of quadriceps and the corresponding peak rate of force development (peak RFD) during the recovery of eccentric exercise. Twelve untrained men (aged 21·7 ± 2·3 year) performed 100 maximal eccentric contractions for knee extensors (10 sets of 10 repetitions with a 2‐min rest between each set) on isokinetic dynamometer. PT and peak RFD accessed by maximal isokinetic knee concentric contractions at 60° s−1 were obtained before (baseline) and at 24 and 48 h after eccentric exercise. Indirect markers of muscle damage included delayed onset of muscle soreness (DOMS) and plasma creatine kinase (CK) activity. The eccentric exercise resulted in elevated DOMS and CK compared with baseline values. At 24 h, ... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5489405 Tue, 01 Nov 2011 04:00:00 +0100 5489405 http://www.medworm.com/index.php?rid=5470822&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01072.x SummaryExercise testing is underutilized in patients with valve disease. We have previously found a low physical work capacity in patients with aortic regurgitation 6 months after aortic valve replacement (AVR). The aim of this study was to evaluate aerobic capacity in patients 4 years after AVR, to study how their peak oxygen uptake (peakVO2) had changed postoperatively over a longer period of time. Twenty‐one patients (all men, 52 ± 13 years) who had previously undergone cardiopulmonary exercise testing (CPET) pre‐ and 6 months postoperatively underwent maximal exercise testing 49 ± 15 months postoperatively using an electrically braked bicycle ergometer. Breathing gases were analysed and the patients’ physical fitness levels categorized according to Åstrand’... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5470822 Tue, 01 Nov 2011 04:00:00 +0100 5470822 http://www.medworm.com/index.php?rid=5461060&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01073.x This study examined the effect of exercise intensity on the kinetics of muscle oxygen consumption in non‐exercising forearm flexor muscles () during exercise. Seven healthy male subjects performed cycling exercise for 60 min at 30% of maximal oxygen consumption (%) and 30 min at 50% on separate days. The values at rest and during exercise were measured by near‐infrared spectroscopy. The at 30% significantly increased to 1·2 ± 0·1‐fold over resting value at 20 min after the beginning of exercise (P<0·05) and remained constant within 1·2‐ to 1·3‐fold over resting value until 60 min during exercise. The at 50% significantly increased to 1·2 ± 0·1‐fold over resting value at 15 min after the beginning of exercise (P<0·05). Subsequently, the at 50% i... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5461060 Tue, 01 Nov 2011 04:00:00 +0100 5461060 http://www.medworm.com/index.php?rid=5451266&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01069.x SummaryStrength training is a recommended measure against loss of strength and muscle mass because of age‐ or illness‐induced inactivity. Strength exercises may impose heavy cardiovascular load by increasing heart rate and blood pressure. To increase strength efficiently, a heavy load has to be applied; this, however, leads to a spontaneous Valsalva manoeuvre, which additionally raises blood pressure. Avoidance of this manoeuvre is recommended. If the additional rise in arterial blood pressure caused by Valsalva manoeuvre is smaller than intrathoracic or intracranial pressures during this manoeuvre, Valsalva manoeuvre may actually protect arteries located in the thorax and in the brain by diminishing transmural pressure acting across these vessels. Effect of controlled breathing or bri... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5451266 Tue, 01 Nov 2011 04:00:00 +0100 5451266 http://www.medworm.com/index.php?rid=5433897&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01067.x This study demonstrated a means to assess the effects of ischaemic preconditioning (IP) on the free intracellular Ca2+ pool during prolonged ischaemia. In a porcine myocardial ischaemia model, microdialysis (MD) was used for sampling of metabolic and injury markers in IP and non‐IP (control) groups. 45Ca2+ was delivered in microperfusate locally to ischaemic myocardium, with distribution and uptake assessed by 45Ca2+ recovery in microdialysate. Cardiomyocytes in vitro were exposed to a Ca2+ ionophore and tested for 45Ca2+ uptake. An accentuated myocardial calcium ion influx (observed as an increased microdialysate 45Ca2+ recovery in the extracellular milieu) was noted in control pigs compared with IP pigs during ischaemia. Suspended cardiomyocytes preincubated with a Ca2+ ionophore to in... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5433897 Tue, 01 Nov 2011 04:00:00 +0100 5433897 http://www.medworm.com/index.php?rid=5412521&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01068.x This study presents a method to obtain temporal evolutions of transmural 3D Lagrangian strains from two intersecting 2D planes of slice‐followed cine displacement encoding with stimulated echoes (DENSE) data using a bilinear‐cubic polynomial element to resolve strain from the displaced myocardial positions. The method was validated against an analytical standard and has been applied to in vivo data acquired on a 3 T magnetic resonance system from a healthy volunteer to quantify systolic strains at the anterior‐basal region of left ventricular myocardium. The method demonstrates accurate results when validated in the analytical model, and the in vivo results agree within experimental accuracy with values reported in the literature. Even with a short scan time, this method provides the... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5412521 Tue, 01 Nov 2011 04:00:00 +0100 5412521 http://www.medworm.com/index.php?rid=5402392&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01066.x Conclusions:  The washout rate of a subcutaneous 99mTc‐HSA depot is not a reliable diagnostic tool in examination of lower extremity lymphoedema. Additional examinations revealed in vivo instability of the utilized 99mTc‐HSA as the likely reason. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5402392 Tue, 01 Nov 2011 04:00:00 +0100 5402392 http://www.medworm.com/index.php?rid=5391848&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01065.x Conclusion:  The occurrence of plaques in the ICA was associated with low DL,CO and high RV, but not significantly with FEV1 or COPD status. The results suggest that the relationships between reduced lung function, COPD and CVD are complex and not only linked to bronchial obstruction and low‐grade systemic inflammation. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5391848 Tue, 01 Nov 2011 04:00:00 +0100 5391848 http://www.medworm.com/index.php?rid=5368292&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01064.x SummaryReference values of spirometry and diffusion capacity are usually adjusted for age, sex, height and ethnic origin. However, also other factors, mainly weight and body composition, have an effect on pulmonary function. Therefore, we examined how body composition and abdominal obesity are related to lung function in normal population and whether they should be taken into account in the reference values. Two hundred and eighty‐four healthy Finnish non‐smoking adults were included in the study. Height, waist circumference, abdominal sagittal diameter and body composition were measured, and spirometry and diffusion capacity (DLCO) were performed. Muscle mass (r = 0·29, P = 0·000) and lean body mass (r = 0·29, P = 0·000) correlated positively with DLCO. However, no... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5368292 Tue, 01 Nov 2011 04:00:00 +0100 5368292 http://www.medworm.com/index.php?rid=5317865&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01058.x Conclusion:  Inhalation of LPS in healthy volunteers can be used as a safe and stable model of neutrophil inflammation. Blood/plasma and sputum indices can be employed to monitor the response to LPS. We suggest that this model may be used for initial human studies of novel COPD‐active drugs. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5317865 Sat, 15 Oct 2011 22:14:14 +0100 5317865 http://www.medworm.com/index.php?rid=5317866&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01062.x Conclusions:  This study shows that snuff intake causes a significant decrease in E/A ratio and a delay in ventricular relaxation and therefore a decrease in diastolic heart function in the left and right ventricles. The mechanism behind these alterations is probably very complex, but a combination of nicotine effects and loading conditions is probably the main factor. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5317866 Thu, 13 Oct 2011 04:00:00 +0100 5317866 http://www.medworm.com/index.php?rid=5307097&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01060.x Conclusion:  In this population of healthy adults, peak NMI was significantly greater in females than in males. These findings suggest that gender differences exist in the microvascular vasodilation responses to NTG using PAT. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5307097 Wed, 12 Oct 2011 20:16:17 +0100 5307097 http://www.medworm.com/index.php?rid=5307099&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01061.x SummaryWe recently have shown that samples from microdialysis (MD) probes placed on the surface of the heart reflect metabolic events in the myocardium. This new interesting observation challenges us to consider whether surface application of MD applies to other parenchymatous organs and their surfaces. In 13 anesthetized pigs, transient liver ischaemia was achieved by occlusion of arterial and venous inflow to the liver. Two probes on liver surface and two in parenchyma were perfused with a flow rate of 1 μl per min (n = 13). An identical set‐up was used for probes with a flow rate of 2 μl per min (n = 9). Samples were collected for every 15‐min period during 60 min of baseline, 45 min of ischaemia and 60 min of reperfusion. Lactate, glucose, pyruvate and glycerol ... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5307099 Mon, 10 Oct 2011 04:00:00 +0100 5307099 http://www.medworm.com/index.php?rid=5307101&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01059.x In conclusion, metabolic stress is not increased following practical BFR walking exercise. This study may provide an explanation for the lower hormone response observed with BFR walking and provide further evidence that mechanisms other than metabolic accumulation exist with BFR. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5307101 Sun, 09 Oct 2011 04:00:00 +0100 5307101 http://www.medworm.com/index.php?rid=5264239&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01050.x Conclusion:  Functional SPECT imaging with 99mTc‐HL91 and 99mTc‐MIBI can be used to detect the seriously ischaemic but viable myocardium with a mismatched uptake character. The uptake of 99mTc‐HL91 in the viable myocardium reached a stable level at 3–4 h after injection. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5264239 Thu, 29 Sep 2011 04:00:00 +0100 5264239 http://www.medworm.com/index.php?rid=5253855&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01055.x SummaryThe purpose of this study was to determine whether exercise modulates the responses of middle cerebral artery blood velocity (MCA Vmean) and cerebrovascular conductance to sympathetic stimulation (i.e. cold pressor test – CPT). To accomplish this, MCA Vmean responses were assessed during CPT, static handgrip exercise (HG) at 30% of maximum voluntary contraction and combined condition (HG + CPT), assigned in a counterbalanced order, in eight healthy subjects. Blood pressure (BP), cardiac output (CO) and end‐tidal partial pressure of carbon dioxide (PETCO2) were also measured non‐invasively, and an index of vascular conductance was calculated for MCA (CVCi). BP increased from rest (P<0·05) during CPT and HG and was additionally augmented during HG + CPT (P<0·05 v... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5253855 Sun, 25 Sep 2011 04:00:00 +0100 5253855 http://www.medworm.com/index.php?rid=5241687&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01051.x Conclusions:  We describe a method for objective quantification of myocardium at risk as perfusion defect size on MPS using knowledge of the anatomy of the myocardium from co‐registered MRI. This enables simultaneous quantification of myocardium at risk by MPS and infarct size by MRI for the evaluation of treatments for myocardial infarction. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5241687 Thu, 22 Sep 2011 04:00:00 +0100 5241687 http://www.medworm.com/index.php?rid=5288731&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01054.x Conclusions:  ΔCOx was impaired in non‐hypoxaemic patients with COPD who desaturated during exercise. Hyperoxic breathing was able to correct for these abnormalities, an effect related to enhanced CaO2 rather than improved central haemodynamics. This indicates that O2 supplementation ameliorates exercise COx in patients with COPD who are not currently entitled to ambulatory O2 therapy. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5288731 Thu, 01 Sep 2011 04:00:00 +0100 5288731 http://www.medworm.com/index.php?rid=5264237&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01057.x SummaryThe purpose of this study was to compare the component characteristics of thigh muscle volume in Japanese young and older men. The subjects in both young (YM, n = 15) and older (OM, n = 13) men were physically active (performed aerobic‐type exercise 1–3 times per week), but none of the subjects had regularly participated in resistance training for a minimum of 3 years prior to the study. Contiguous transverse magnetic resonance imaging (1·5‐T scanner) images were obtained from the thigh, and total and individual (quadriceps, hamstrings and adductors) muscle volumes were calculated by multiplying the muscle cross‐sectional area (CSA) by slice thickness and the total number of slices. Muscle length and average muscle CSA (muscle volume divided by muscle length) were... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5264237 Thu, 01 Sep 2011 04:00:00 +0100 5264237 http://www.medworm.com/index.php?rid=5253854&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01056.x Conclusion:  The ability of these tests to determine a real change in VL and GM muscle architecture is good on a group level but problematic on an individual level as the relatively large 95% ratio LOAs in the current study may encompass the changes in architecture observed in other training studies. Therefore, the current findings suggest that B‐mode ultrasonography can be used with confidence by researchers when investigating changes in muscle architecture in groups of older adults, but its use is limited in showing changes in individuals over time. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5253854 Thu, 01 Sep 2011 04:00:00 +0100 5253854 http://www.medworm.com/index.php?rid=5241686&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01052.x SummaryThe purpose of this study was to determine the effect of 6 min of prior‐priming exercise on the incidence of plateau at 2max. Twelve trained cyclists (age, 21 ± 3 years; height, 175·0 ± 8·0 cm; weight, 69·0 ± 10·4 kg; maximal oxygen uptake (2max), 56·3 ± 6·9 ml kg−1 min−1) completed three incremental tests to volitional exhaustion, which were classified as unprimed (UP), heavy‐primed (HP) and severe‐primed (SP), at a work rate of 1 W 2 s−1, from an initial workload of 100 W, for the determination of 2max. 2max trial in the HP and SP conditions was preceded by a period of 4‐min unloaded cycling followed by a further 6 min of constant load cycling at Δ50%2 gas exchange threshold (GET)‐ 2max (HP) and Δ75%2 GET‐2max (SP... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5241686 Thu, 01 Sep 2011 04:00:00 +0100 5241686 http://www.medworm.com/index.php?rid=5229508&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01053.x SummaryLow‐intensity resistance exercise combined with blood flow restriction has been shown to produce comparable increases in muscle strength and hypertrophy as traditional high‐intensity (HI) resistance training. However, the vascular effects of low‐intensity blood flow–restricted (LI‐BFR) exercise training are not well characterized. Therefore, the purpose of this study was to compare the vascular effects of LI‐BFR, moderate‐intensity (MI), and HI resistance exercise training. Forty‐six young men were divided into four groups: a HI, MI or LI‐BFR lower body resistance training group or a non‐exercise control group (C). Blood pressure, arterial compliance and calf vascular conductance (CVC) were assessed before and after the 6‐week intervention. After the interventi... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5229508 Thu, 01 Sep 2011 04:00:00 +0100 5229508 http://www.medworm.com/index.php?rid=5187009&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01049.x Conclusions:  Coronary flow reduction in murine PH has potential to be clinically meaningful and should therefore further studied in a clinical trial. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5187009 Wed, 31 Aug 2011 23:00:00 +0100 5187009 http://www.medworm.com/index.php?rid=5165352&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01048.x Conclusion: 99mTc‐MIBI parathyroid scintigraphy is most likely to yield identification and localization of a parathyroid adenoma when both PTH and calcium are elevated; however, although there is no lower limit of PTH which can predict a negative study, we cannot recommend 99mTc‐MIBI parathyroid scintigraphy if the serum calcium is <2·51 mmol l−1. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5165352 Sat, 27 Aug 2011 20:58:36 +0100 5165352 http://www.medworm.com/index.php?rid=5149983&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01046.x Conclusion:  The degrees of emphysema and air trapping may contribute to the different response patterns to bronchodilator in patients with COPD. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5149983 Wed, 24 Aug 2011 21:48:43 +0100 5149983 http://www.medworm.com/index.php?rid=5165353&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01047.x In conclusion, the DRAW method can be used to facilitate the separation of the RV and the atrium. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5165353 Tue, 23 Aug 2011 23:00:00 +0100 5165353 http://www.medworm.com/index.php?rid=5121870&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01045.x SummaryMeasuring intima‐media thickness (IMT) in the common carotid artery (CCA) is a valuable resource for the evaluation of subclinical atherosclerosis. The main objective of this study was to explore whether a B‐mode ultrasound technique, Philips ATL, and an M‐mode ultrasound technique, Wall Track System (WTS), show interchangeable results when measured in CCA and the abdominal aorta (AA). A total of 24 healthy, young subjects were examined. IMT and lumen diameter (LD) of the AA and the CCA were measured twice by two skilled ultrasonographers with two different ultrasound equipment B‐mode: (Philips, ATL and M‐mode: WTS).The intra‐observer variability of IMT in CCA and AA using B‐mode showed a coefficient of variation 8% and 9%, and with M‐mode 11% and 15%, respectively. ... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5121870 Sat, 13 Aug 2011 01:21:07 +0100 5121870 http://www.medworm.com/index.php?rid=5099746&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01041.x Conclusion: After an oral glucose load, the abdominal ATBF and microvascular blood volume changes in abdominal subcutaneous adipose tissue are impaired in overweight type 2 diabetic subjects compared to weight‐matched healthy subjects. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5099746 Sat, 06 Aug 2011 22:36:13 +0100 5099746 http://www.medworm.com/index.php?rid=5090592&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01043.x Conclusion:  Plasma levels of tPAI‐1 and MMP‐9 are potentially useful in patients suspected of PE, however, not in the presence of the coronary atherosclerosis. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5090592 Thu, 04 Aug 2011 05:29:00 +0100 5090592 http://www.medworm.com/index.php?rid=5072844&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01044.x In conclusion, this study provides the first evidence that 6 weeks of walking exercise with BFR may improve limb venous compliance in untrained elder female subjects. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5072844 Fri, 29 Jul 2011 17:44:37 +0100 5072844 http://www.medworm.com/index.php?rid=5072845&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01042.x Conclusion:  Decreased ATT was associated with increased arterial stiffness, increased subclinical atherosclerosis and decreased SV. Current results suggest that ATT provides simultaneous information on several aspects of cardiovascular structure and function and could possibly serve as a new integrated parameter for cardiovascular risk stratification. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5072845 Wed, 27 Jul 2011 23:00:00 +0100 5072845 http://www.medworm.com/index.php?rid=5065761&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01039.x Conclusion:  Agonists of TRPV1 and TRPA1 induced MUC5B release in the human nasal airways in vivo. These findings may be of relevance with regard to the regulation of mucin production under physiological and pathophysiological conditions. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5065761 Wed, 27 Jul 2011 07:03:20 +0100 5065761 http://www.medworm.com/index.php?rid=5043823&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01036.x SummaryWe studied the relative importance of the magnitude and duration of the shear stimulus to induce flow‐mediated dilation (FMD) in the brachial artery of 10 healthy men by ultrasound imaging. The shear stress stimulus was induced by different durations of reactive hyperaemia following 15‐min forearm occlusion. The control condition of continuous postocclusion hyperaemia was compared to 20, 40 and 60 s of reactive hyperaemia followed by reapplication of circulatory arrest for 2 min and a second cuff release. In response to the first cuff release, peak shear rate was not different between conditions; total shear during the first minute was reduced in the 40 s and further reduced in the 20 s conditions. FMD in control (10·0 ± 3·0%), 60 s (10·5 ± 3·2%) and 40�... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5043823 Thu, 21 Jul 2011 19:11:50 +0100 5043823 http://www.medworm.com/index.php?rid=4995097&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01035.x Conclusion:  Specific arterial geometries can be constructed with a high degree of accuracy using MRI. This indicates that the MRI geometries may be used to create realistic and correct geometries in the calculation of WSS in the aorta of human. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4995097 Sat, 02 Jul 2011 23:00:00 +0100 4995097 http://www.medworm.com/index.php?rid=5023564&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01040.x Conclusions:  These findings confirm that PE induces a reduction in ScO2 measured by NIRS and causes an increase in MCA Vmean indicative of cerebral arterial vasoconstriction, although ICA was preserved and IJV increased. These results suggest that a decrease in ScO2 during infusion of PE reflects an altered cerebral contribution of arterial versus venous blood to the NIRS signal, although we cannot rule out that an effect of PE on skin blood flow is important. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5023564 Thu, 30 Jun 2011 23:00:00 +0100 5023564 http://www.medworm.com/index.php?rid=5013290&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01038.x Conclusion:  Postexercise hypotension occurred only following HI. Thus, if one is exercising with the intent of lowering BP, HI resistance exercise may be more useful than low‐intensity BFR resistance exercise. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=5013290 Thu, 30 Jun 2011 23:00:00 +0100 5013290 http://www.medworm.com/index.php?rid=4995096&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01037.x Conclusion:  In a controlled environment, the repeatability of DTM is excellent. DTM can be used as a reproducible and operator‐independent test for non‐invasive measurement of vascular function. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4995096 Thu, 30 Jun 2011 23:00:00 +0100 4995096 http://www.medworm.com/index.php?rid=4956640&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01034.x Conclusion:  Diffusing capacity is more impaired after a wet oxygen dive than after a dry one. This suggests that wet oxygen divers are at increased risk for POT. Monitoring studies during daily practice of professional divers are mandatory to determine the exact operational relevance of the present findings. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4956640 Wed, 22 Jun 2011 23:38:43 +0100 4956640 http://www.medworm.com/index.php?rid=4880023&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01028.x SummaryNew advances in computer processing and imaging have allowed the development of innovative techniques to assess lung function. A promising methodology is optoelectronic plethysmography (OEP). OEP evaluates ventilatory kinematics through the use of infrared imaging. Markers are placed, and images read on the chest, back and abdomen of subjects. Currently, this system is used mainly in research settings, but in the future may have broad applicability to patient populations such as very young children, patients with neuromuscular disease and patients who cannot be tested with classical spirometry testing. This paper presents the history and development of OEP, along with a summary of the OEP methodology, a discussion of research findings and results to date, as well as application and ... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4880023 Sat, 28 May 2011 23:00:00 +0100 4880023 http://www.medworm.com/index.php?rid=4880022&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01032.x SummaryFlow‐mediated dilation (FMD) is a surrogate marker for endothelial function. In the FMD procedure, arterial response during cuff inflation is not taken into consideration yet studies have demonstrated vasoconstriction, vasodilation and no change in the brachial artery during cuff inflation. The term low flow‐mediated constriction (L‐FMC) has been introduced to describe the vasoconstriction that occurs in some individuals during inflation of the cuff. The aims of this study were to examine (i) whether brachial artery response during cuff inflation differed in a population with varied coronary artery disease (CAD) risk factor profiles, (ii) the impact of this response on the subsequent calculation of FMD and (iii) the role of arterial stiffness in this variable response. L‐FMC... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4880022 Sat, 28 May 2011 23:00:00 +0100 4880022 http://www.medworm.com/index.php?rid=4926138&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01030.x SummaryPeak brachial artery dilation post‐nitroglycerin (NTG) administration occurs between 3 and 5 min in adults. The purpose of this study was to identify the time to peak dilation response to sublingual NTG (0·3 mg) in youth. Endothelium‐independent dilation (EID) was measured in 198 healthy (113 males, 85 females) youth (6–18 years) via ultrasound imaging of the brachial artery following NTG administration. Time to peak EID was 268 s following NTG administration, with no significant (P = 0·6) difference between males and females. There was a significant (P<0·001) difference between EID post‐NTG at the 3 versus 4 min, 4 versus 5‐min, and 3 versus 5 min time points. Peak EID (males: 24·8 ± 0·5 versus females: 25·3 ± 0·6%, P = 0·6) was no... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4926138 Sat, 30 Apr 2011 23:00:00 +0100 4926138 http://www.medworm.com/index.php?rid=4907307&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01033.x SummaryMuscular blood flow reduction (BFR) during multiple sets of low‐intensity exercise training has been shown to elicit muscle hypertrophy and strength gain. Several hypotheses have been proposed to explain the hypertrophic adaptations to low‐intensity BFR exercise, which include muscle fatigue with metabolic stress. However, the change in intramuscular inorganic phosphate (Pi, an index of muscle fatigue) during multiple sets of low‐intensity exercise with BFR is poorly understood. Eight men performed four sets of unilateral plantar flexion exercise (20% 1‐RM) on a 31P‐magnetic resonance spectroscopy. Each subject wore a cuff (5‐cm wide) on the most proximal portion of the thigh; the cuff was inflated during the exercise session at three different pressures [0 mmHg as the... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4907307 Sat, 30 Apr 2011 23:00:00 +0100 4907307 http://www.medworm.com/index.php?rid=4880021&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01031.x SummaryTo determine muscle adaptations to retraining after short‐term detraining, we examined the effects of continuous and interrupted resistance training on muscle size and strength in previously untrained men. Fifteen young men were divided into continuous training (CTr) or retraining (RTr) groups and performed high‐intensity bench press training. The CTr group trained continuously for 15 weeks, while the RTr group trained for 6 weeks, stopped for a 3‐week detraining period and resumed training at week 10. After the initial training phase, increases (P<0·01) in one repetition maximum (1‐RM) and magnetic resonance imaging‐measured triceps brachii and pectorals major muscle cross‐sectional areas (CSAs) were similar in both groups. Muscle CSA and 1‐RM increased (P<... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4880021 Sat, 30 Apr 2011 23:00:00 +0100 4880021 http://www.medworm.com/index.php?rid=4857537&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01029.x Conclusions:  Preload reduction in normal LV elicits increased systolic CCR and regional area fraction at sub‐papillary and apical levels as well as net twist angle. These findings might be of physiological importance to minimize reduction in stroke volume and maintain arterial blood pressure. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4857537 Sat, 30 Apr 2011 23:00:00 +0100 4857537 http://www.medworm.com/index.php?rid=4750346&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01027.x The objective of the study was to identify LT by four different methods (visual inspection, log–log, algorithmic adjustment and QLac) during resistance exercise and to evaluate which methods present more precision. Twelve men performed a maximal IT on the leg press at relative intensities of 10%, 20%, 25%, 30%, 35%, 40%, 50%, 60%, 70%, 80% and 90% of 1RM with 1‐min stages. During the 2‐min interval between stages, capillary blood was collected for blood lactate analysis. LT was detected using each of the four methods. The intensity of LT by visual inspection method was 26·9 (5·2)% of 1RM, adjustment algorithmic method was 27·8 (3·6)% of 1RM, log–log method was 23·3 (3·5)% of 1RM and QLac method was 31·6 (9·8)% of 1RM, with significant difference only between log–log and Q... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4750346 Tue, 26 Apr 2011 19:38:25 +0100 4750346 http://www.medworm.com/index.php?rid=4728625&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01025.x Conclusions:  Unlike some previous studies, the present study detected no differences in hypoalgesia between AL‐TENS, conventional TENS and placebo (no current) TENS during stimulation. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4728625 Wed, 20 Apr 2011 07:27:56 +0100 4728625 http://www.medworm.com/index.php?rid=4689318&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01024.x Discussion:  Liver and cardiac uptakes of bone‐seeking agents have been described in amyloidosis, and for the heart, after myocardial infarction. We have ruled out any possible contamination by interfering radiopharmaceuticals and cannot find any reason for these findings. Eleven patients with amyloidosis seem one of several hypotheses that is highly improbable. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4689318 Fri, 08 Apr 2011 22:44:23 +0100 4689318 http://www.medworm.com/index.php?rid=4689319&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01026.x Conclusion:  This study shows that healthy obese subjects have a similar response pattern to intravenous LPS as described in lean subjects. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4689319 Wed, 06 Apr 2011 23:00:00 +0100 4689319 http://www.medworm.com/index.php?rid=4618669&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01019.x Conclusions:  US RF‐data technology could be used to accurately and quantitatively evaluate increased IMT and decreased arterial elasticity of the CCA in patients with ISH compared with normal subjects. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4618669 Mon, 21 Mar 2011 00:00:00 +0100 4618669 http://www.medworm.com/index.php?rid=4618668&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01021.x In conclusion, age‐related skeletal muscle loss was strongly observed in the quadriceps and abdominal sites in both the Japanese and German men, although the rate of regular physical activity was different between the two groups. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4618668 Mon, 21 Mar 2011 00:00:00 +0100 4618668 http://www.medworm.com/index.php?rid=4585867&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01015.x Conclusion:  Actrem above 10 MBq for nanocolloid tracer appears important for appropriate identification of SNs in patients with BC. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4585867 Tue, 15 Mar 2011 00:00:00 +0100 4585867 http://www.medworm.com/index.php?rid=4678996&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01023.x SummaryThe purpose of this study was to investigate whether changes in angular velocity would alter vastus lateralis (VL) and rectus femoris (RF) oxygenation status during maximal isokinetic knee extension exercises. Eleven recreationally active male participants randomly performed ten maximal knee extensions at 30, 60, 120 and 240° s−1. Tissue oxygenation index (TOI) and total haemoglobin concentration ([tHb]) were acquired from the VL and RF muscles by means of near‐infrared spectroscopy (NIRS). Breath‐by‐breath pulmonary oxygen consumption () was recorded throughout the tests. Peak torque and significantly decreased as a function of velocity (P<0·05). Interestingly, RF and VL TOI significantly increased as a function of velocity (P<0·05), whereas [tHb] significantly d... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4678996 Tue, 01 Mar 2011 00:00:00 +0100 4678996 http://www.medworm.com/index.php?rid=4647732&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01016.x Conclusions:  Baseline GSV diameter as well as GSV compliance is decreased in elderly men compared to the young subjects. As reduced GSV diameter as well as reduced compliance is related to decreased graft patency, these findings might be of importance for the uses of GSV as graft material in cardiovascular bypass surgery. The clinical value has to be clarified in future studies. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4647732 Tue, 01 Mar 2011 00:00:00 +0100 4647732 http://www.medworm.com/index.php?rid=4624142&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01022.x We examined the relationship between training‐induced limb and trunk muscle hypertrophy in high‐intensity resistance training (HIT) or blood flow–restricted low‐intensity resistance training (LI‐BFR) programmes. Thirty young men were divided into three groups: HIT (n = 10), LI‐BFR (n = 10) and non‐training control (CON, n = 10). The HIT and LI‐BFR groups performed 75% and 30%, respectively, of one‐repetition maximal (1‐RM) bench press exercise, 3 days per week for 6 weeks. During the training sessions, the LI‐BFR group wore elastic cuffs around the most proximal region of both arms. Muscle cross‐sectional area (CSA) and 1‐RM bench press strength were measured before and 3 days after the final training session. Total training volumes (lifting weig... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4624142 Tue, 01 Mar 2011 00:00:00 +0100 4624142 http://www.medworm.com/index.php?rid=4618667&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01020.x SummaryThe purpose of this study was to assess the reliability of postexercise near‐infrared spectroscopy (NIRS)‐derived measurements and their sensitivity to different exercise intensities in the field. Seventeen athletes (24·1 ± 5·6 year) repeated, on three occasions, two 2‐min submaximal shuttle‐runs at 40% and 60% of VIFT (final speed of the 30–15 intermittent fitness test) and a 50‐m shuttle‐run sprint (Sprint), with (OCC) or without (CON) repeated transient arterial occlusions of the medial gastrocnemius during the postexercise period. NIRS variables (i.e. oxyhaemoglobin [HbO2], deoxyhaemoglobin [HHb] and their difference [Hbdiff]) were measured continuously for 3 min after each exercise. Half‐recovery (½Rec) and mean response (MRT; monoexponential curve f... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4618667 Tue, 01 Mar 2011 00:00:00 +0100 4618667 http://www.medworm.com/index.php?rid=4602928&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01018.x SummarySkin vasomotor responses to cold exposure (CE) have been measured widely and shown to be abnormal in some clinical conditions. Among other methods, monitoring of skin temperature (Tsk) changes has been applied for those purposes. We investigated such changes simultaneously in different skin areas of healthy young men during foot and facial CE. Tsk was measured using infrared thermography in the big toe and dorsum of the left foot and with a contact thermode in the fingertip. The relationship of Tsk responses within individuals and factors influencing them were examined using mixed model analysis. Tsk changes varied greatly between sessions, measured areas and individuals. Foot CE that was painful produced both stronger central circulatory and Tsk responses than facial CE. Tsk change... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4602928 Tue, 01 Mar 2011 00:00:00 +0100 4602928 http://www.medworm.com/index.php?rid=4585866&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01017.x Conclusion:  It is of importance to characterize atopic status when evaluating the association between NO and asthma. Our results indicate that the use of extended NO analysis, with particular attention to DawNO and CawNO, may be useful in monitoring treatment for rhinitis and asthma. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4585866 Tue, 01 Mar 2011 00:00:00 +0100 4585866 http://www.medworm.com/index.php?rid=4556732&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01014.x SummaryThe Bruce treadmill test is used worldwide to assess cardiovascular disease. However, because of the high increments of intensity between the stages of this test, it is not best suited to a number of populations. Therefore, the aim of the study was to determine the difference between physiological outcomes of the arm crank test and Bruce treadmill test and to provide a regression equation to account for this. Thirty subjects (16 men and 14 women) performed both an arm crank test and the Bruce treadmill test, on two separate days, in a random order. Peak values of oxygen uptake (VO2), respiratory exchange ratio (RER), ventilation rate (VE), heart rate (HR) and ratings of perceived exertion (RPE) were recorded. Arm crank VO2peak and peak VE were significantly lower compared with tread... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4556732 Tue, 01 Mar 2011 00:00:00 +0100 4556732 http://www.medworm.com/index.php?rid=4486182&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01013.x SummaryWhile the mean increase in flow velocities in posterior cerebral artery (PCA) as a response to visual stimuli is well documented, the data on the reaction time as a measurement of the vasomotor response of the posterior part of the circle of Willis are still sparse. The aim was to assess the visual evoked response in PCA during white light stimulation by means of functional transcranial doppler in patients with severe internal carotid artery (ICA) stenosis, to introduce a real‐time haemodynamic changes as a measurement of the effect of severe carotid disease on the posterior circulation. The measurements were taken in 49 right‐handed patients with severe ICA stenosis or occlusion and 30 healthy volunteers, simultaneously in left and right PCA using 2‐MHz probes, successively i... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4486182 Thu, 17 Feb 2011 21:18:33 +0100 4486182 http://www.medworm.com/index.php?rid=4486183&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01012.x SummaryReciprocal autonomic regulation occurs during incremental exercise. We hypothesized that sympatho‐vagal interplay may become altered after exercise because of the differences in recovery patterns of autonomic arms. The cardiac vagal activity was assessed by measurement of beat‐to‐beat R–R interval oscillations using a Poincaré plot method (SD1), and muscle sympathetic nervous activity (MSNA) was measured from peroneus nerve by a microneurography technique during and after exercise in 16 healthy subjects. Autonomic regulation was compared between the rest and after exercise (3·5 ± 1·0 min after exercise) at equal heart rates (HR). SD1 was at the equal level at the recovery phase (40 ± 21 ms) compared to the resting condition (38 ± 16 ms, P = ns) at... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4486183 Wed, 16 Feb 2011 00:00:00 +0100 4486183 http://www.medworm.com/index.php?rid=4474560&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01011.x This study examined the validity of a new HR – and HR variability‐based method (Firstbeat PRO heartbeat analysis software) in the estimation of VO2 in real‐life tasks. The method takes into account the respiration rate determined from HR variability and the differences in the on/off dynamics of HR and VO2, and no calibration tests are needed. Ten men and nine women performed 25 tasks representing different types of daily activities. Portable devices were used to measure R‐to‐R intervals (ECG), VO2 and respiration rate. In pooled regression analysis, the estimated VO2 accounted for 87% of the variability in the actual VO2, SEE 3·5 ml min−1 kg−1 (1 MET). At group level, the method underestimated slightly the measured VO2 (mean difference – 1·5 ml min−1 kg−1 or �... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4474560 Tue, 15 Feb 2011 01:42:04 +0100 4474560 http://www.medworm.com/index.php?rid=4443522&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01006.x Conclusions:  The RLA method results in better visualization and definition of the RV inflow, outflow and apex. Accurate measurement of RV volumes for diagnosis and follow‐up of cardiac diseases are enhanced by the RLA orientation, even though additional acquisition time is required. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4443522 Mon, 07 Feb 2011 00:00:00 +0100 4443522 http://www.medworm.com/index.php?rid=4443523&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01009.x SummaryThe aim of this study was to investigate whether the bone response to long bed rest–related immobility and during subsequent recovery differed at anatomically different sectors of tibial epiphysis and diaphysis. For this study, peripheral quantitative tomographic (pQCT) scans obtained from a previous 90‐day ‘Long Term Bed Rest’ intervention were preprocessed with a new method based on statistical approach and re‐analysed sector‐wise. The pQCT was performed on 25 young healthy males twice before the bed rest, after the bed rest and after 1‐year follow‐up. All men underwent a strict bed rest intervention, and in addition, seven of them received pamidronate treatment and nine did flywheel exercises as countermeasures against disuse‐related bone loss. Clearly, 3–9% s... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4443523 Sun, 06 Feb 2011 00:00:00 +0100 4443523 http://www.medworm.com/index.php?rid=4443521&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01010.x Conclusions:  As expected, heart rate dynamics were substantially diminished in older (healthy and COPD) groups compared with healthy young controls. Patients with COPD showed similar heart rate dynamics compared with age‐matched controls, both before and after hypoxia correction. However, there was a suggestion of diminished DC in COPD compared with age‐matched controls (P = 0·059) that was absent following oxygen therapy. TS, DC and AC indices were altered by similar degrees in older subjects, apparently indicating equivalent tonic dysfunction of sympathetic/parasympathetic systems with ageing. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4443521 Sat, 01 Jan 2011 00:00:00 +0100 4443521 http://www.medworm.com/index.php?rid=4416322&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01007.x SummaryArtificial neural networks interpretation of myocardial perfusion scintigraphy (MPS) has so far been based on image data alone. Physicians reporting MPS often combine image and clinical data. The aim was to evaluate whether neural network interpretation would be improved by adding clinical data to image data. Four hundred and eighteen patients were used for training and 532 patients for testing the neural networks. First, the network was trained with image data alone and thereafter with image data in combination with clinical parameters (age, gender, previous infarction, percutaneous coronary intervention, coronary artery bypass grafting, typical chest pain, present smoker, hypertension, hyperlipidaemia, diabetes, peripheral vascular disease and positive family history). Expert inte... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4416322 Sat, 01 Jan 2011 00:00:00 +0100 4416322 http://www.medworm.com/index.php?rid=4391359&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2011.01008.x Discussion and conclusion:  International recommendations or guidelines related to treatment of AEs after nuclear medicine studies do not exist. Serious AEs in nuclear medicine are very rare, but anaphylactic reactions have been reported and may be life threatening. If repeated administration of the radio‐pharmaceutical must be given, the prophylactic and therapeutic interventions should follow general international guidelines for allergic reactions. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4391359 Sat, 01 Jan 2011 00:00:00 +0100 4391359 http://www.medworm.com/index.php?rid=4340290&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.01005.x Conclusion:  Based on a reproducibility and reliability analysis, we recommend the testing of isokinetic strength of the shoulder rotators to be conducted in supine lying, with the arm at 90° or 45° abduction in the frontal plane. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4340290 Sat, 01 Jan 2011 00:00:00 +0100 4340290 http://www.medworm.com/index.php?rid=4334252&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.01003.x This study compared the fat metabolism between ‘a single bout of 30‐min exercise’ and ‘three bouts of 10‐min exercise’ of the same intensity (60% maximal oxygen uptake) and total exercise duration (30 min). Nine healthy men participated in three trials: (1) a single 30‐min bout of exercise (Single), (2) three 10‐min bouts of exercise, separated by a 10‐min rest (Repeated) and (3) rest (Rest). Each exercise was performed with a cycle ergometer at 60% of maximal oxygen uptake, followed by 180‐min rest. Blood lactate concentration increased significantly after exercise in the Single and Repeated trials (P<0·05), but the Single trial showed a significantly higher value during the recovery period (P<0·05). No significant difference was observed in the responses of ... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4334252 Sat, 01 Jan 2011 00:00:00 +0100 4334252 http://www.medworm.com/index.php?rid=4320117&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.01004.x Conclusion:  Cardiac magnetic resonance imaging and IGR using photoacoustic analysis in patients with suspected PAH provided non‐invasive measurements of SV that agreed closely with those obtained from TD measured during RHC. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4320117 Sat, 01 Jan 2011 00:00:00 +0100 4320117 http://www.medworm.com/index.php?rid=4251901&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.01000.x SummaryAcute pulmonary embolism (PE) often decreases pulmonary diffusing capacity for carbon monoxide (DL,CO), but data on the mechanisms involved are inconsistent. We wanted to investigate whether reduction in diffusing capacity of alveolo‐capillary membrane (DM) and pulmonary capillary blood volume (Vc) is associated with the extent of PE or the presence and severity of right ventricular dysfunction (RVD) induced by PE and how the possible changes are corrected after 7‐month follow‐up. Forty‐seven patients with acute non‐massive PE in spiral computed tomography (CT) were included. The extent of PE was assessed by scoring mass of embolism. DL,CO, Vc, DM and alveolar volume (VA) were measured by using a single breath method with carbon monoxide and oxygen both at the acute phase ... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4251901 Mon, 13 Dec 2010 05:08:24 +0100 4251901 http://www.medworm.com/index.php?rid=4243689&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.01001.x Conclusions:  Takotsubo cardiomyopathy temporarily affects systolic LV and RV function, while most diastolic parameters remain unchanged. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4243689 Tue, 07 Dec 2010 00:00:00 +0100 4243689 http://www.medworm.com/index.php?rid=4243688&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.01002.x Conclusions:  In asymptomatic KCNQ1 mutation carriers, repolarization abnormalities are more evident in the QT peak than in the QT end interval during adrenergic adaptation, possibly related to transmural differences in the degree of IKs block. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4243688 Tue, 07 Dec 2010 00:00:00 +0100 4243688 http://www.medworm.com/index.php?rid=4194409&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00988.x In this study high‐resolution respirometry was used to quantify oxygen flux in permeabilized fibres from biopsies of the vastus lateralis muscle in patients with COPD and compared to healthy control subjects. The main findings of this study were that (i) routine state 2 respiration was higher in COPD; (ii) state 3 respiration in the presence of ADP was similar in both groups with substrate supply of electrons to complex I (COPD 38·28 ± 3·58 versus control 42·85 ± 3·10 pmol s−1 mg tissue−1), but O2 flux with addition of succinate was lower in COPD patients (COPD 63·72 ± 6·33 versus control 95·73 ± 6·53 pmol s−1 mg tissue−1); (iii) excess capacity of cytochrome c oxidase in COPD patients was only ∼50% that of control subjects. These results indicate that quadriceps mu... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4194409 Mon, 22 Nov 2010 00:00:00 +0100 4194409 http://www.medworm.com/index.php?rid=4180928&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00985.x Conclusion:  Children with obesity had low vagal activity at rest, and there was no gender difference. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4180928 Thu, 18 Nov 2010 00:00:00 +0100 4180928 http://www.medworm.com/index.php?rid=4170179&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00992.x SummaryThe purpose of this study was to investigate the effects of whole‐body vibration (WBV) on blood flow velocity and muscular activity after different vibration protocols in Friedreich’s ataxia (FA) patients. After two familiarization sessions ten patients received six 3 min WBV treatments depending on a combination of frequency (10, 20 or 30 Hz) and protocol (constant or fragmented). Femoral artery blood flow velocity, vastus lateralis (VL) and vastus medialis (VM) electromyography (EMG), and rate of perceived exertion were registered. Peak blood velocity was increased with respect to basal values after 1, 2 and 3 min of WBV (14·8%, 18·8% and 19·7%, respectively, P < 0·001). Likewise, mean blood velocity was increased with respect to basal values after 1, 2 and 3�... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4170179 Mon, 15 Nov 2010 00:00:00 +0100 4170179 http://www.medworm.com/index.php?rid=4170178&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00996.x Conclusion:  A reduced arterial compliance, but not endothelium‐dependent vasodilation, was related to a low ABI in both legs after adjustment for major risk factors, suggesting that atherosclerosis in the leg arteries is associated with arterial compliance also in other parts of the vasculature. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4170178 Mon, 15 Nov 2010 00:00:00 +0100 4170178 http://www.medworm.com/index.php?rid=4170177&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00990.x SummaryMild traumatic brain injury (mTBI) or sport‐induced concussion has recently become a prominent concern not only in the athletic setting (i.e. sports venue) but also in the general population. The majority of research to date has aimed at understanding the neurological and neuropsychological outcomes of injury as well as return‐to‐play guidelines. Remaining relatively unexamined has been the pathophysiological aspect of mTBI. Recent technological advances including transcranial Doppler ultrasound and near infrared spectroscopy have allowed researchers to examine the systemic effects of mTBI from rest to exercise, and during both asymptomatic and symptomatic conditions. In this review, we focus on the current research available from both human and experimental (animal) studies s... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4170177 Mon, 15 Nov 2010 00:00:00 +0100 4170177 http://www.medworm.com/index.php?rid=4137199&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00987.x Conclusion:  Our results show that amyloidosis and systemic hypertension produce both LV twist and untwist rate enhancement before LV hypertrophy is developed. In patients with amyloidosis irrespectively of LV infiltration degree, a significant LV untwisting rate peak delay occurs suggesting that different aetiology of cardiac involvement could differently affect LV untwisting rate. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4137199 Fri, 05 Nov 2010 00:00:00 +0100 4137199 http://www.medworm.com/index.php?rid=4243687&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00998.x Conclusions:  These results demonstrate that the markedly lower capacity for force generation in patients with liver cirrhosis is unrelated to their capacity for muscle ATP turnover, but the attenuated initial acceleration of anaerobic glycolysis suggests that these patients could be affected by a central limitation to force generation. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4243687 Mon, 01 Nov 2010 00:00:00 +0100 4243687 http://www.medworm.com/index.php?rid=4210860&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00999.x In conclusion, a significant relation between pain and skeletal metastases could be found in patients with prostate cancer and a reverse relation in patients with breast cancer. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4210860 Mon, 01 Nov 2010 00:00:00 +0100 4210860 http://www.medworm.com/index.php?rid=4201806&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00993.x In this study, we evaluated the reproducibility of impedance cardiography (ICG) measurements following orthostatic and diurnal challenges for a set of 22 CV parameters in ten randomly selected healthy nonpregnant women. A standard protocol was used to record a consecutive series of measurements for each parameter before and after three position changes. This series of measurements was performed twice (AM and PM sessions). For each parameter, measurement‐shift following position change was evaluated at 5% cutoff and compared between sessions. Intra‐ and intersession intraclass correlation (ICC) was calculated for individual measurements per position using repeated‐measures analysis of variance. Intra‐ and intersession Pearson’s correlation coefficient (PCC) was calculated for mean... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4201806 Mon, 01 Nov 2010 00:00:00 +0100 4201806 http://www.medworm.com/index.php?rid=4194408&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00995.x SummaryMicrodialysis (MD) can be used to study metabolism of the beating heart. We investigated whether microdialysis results obtained from epicardial (surface) sampling reflect acute changes in the same way as myocardial sampling from within the substance of the ventricular wall. In anaesthetized open‐thorax pigs a coronary snare was placed. One microdialysis probe was placed with the sampling membrane intramyocardially (myocardial), and a second probe was placed with the sampling membrane epicardially (surface), both in the area which was made ischaemic. Ten minutes collection intervals were used for microdialysis samples. Samples from 19 pigs were analysed for lactate, glucose, pyruvate and glycerol during equilibration, baseline, ischaemia and reperfusion periods. For both probes (su... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4194408 Mon, 01 Nov 2010 00:00:00 +0100 4194408 http://www.medworm.com/index.php?rid=4180927&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00994.x Conclusion:  Capillary bleedings may be used as an early indication of severe sepsis. Examination of skin and tongue microcirculations may be used to characterize severity of sepsis and possibly to assess effect of treatment. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4180927 Mon, 01 Nov 2010 00:00:00 +0100 4180927 http://www.medworm.com/index.php?rid=4170176&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00997.x SummaryNon‐invasive beat‐to‐beat mean arterial pressure (MAP) in finger arteries recorded by the differential oscillometric device was compared with MAP recorded invasively from A. radialis in 22 patients after cardiac surgery. Based on all 132 paired measurements, the MAP values measured at the radial artery were 2.7 ± 4.9 mmHg higher than those measured on fingers. Among 22 patients there were 8 patients receiving inotropic support, their difference being 2.1 ± 5.6 mmHg. The present study revealed that the mean discrepancy between the invasive radial pressure and finger pressure was small; however, patient data sets showed marked variability in average pressure differences when examined individually. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4170176 Mon, 01 Nov 2010 00:00:00 +0100 4170176 http://www.medworm.com/index.php?rid=4147521&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00991.x Conclusion:  This case report highlights the importance of multi‐modality imaging when the findings are not concordant. Moreover, this case report also highlights the importance of careful examination of the heart on routine CT scans, something that is often overlooked by the radiologists. In this case, the CT scan clearly indicated the diagnosis of lipomatous hypertrophy of the interatrial septum and thus could have prevented the subsequent imaging cascade. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4147521 Mon, 01 Nov 2010 00:00:00 +0100 4147521 http://www.medworm.com/index.php?rid=4137198&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00989.x Conclusion:  In healthy children, the reproducibility of SI, RI and FST was relatively good, especially after the exercise stress test. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4137198 Mon, 01 Nov 2010 00:00:00 +0100 4137198 http://www.medworm.com/index.php?rid=4113617&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00986.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4113617 Fri, 29 Oct 2010 21:45:37 +0100 4113617 http://www.medworm.com/index.php?rid=4102945&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00984.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4102945 Tue, 26 Oct 2010 06:16:56 +0100 4102945 http://www.medworm.com/index.php?rid=4058425&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00980.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4058425 Tue, 12 Oct 2010 21:43:42 +0100 4058425 http://www.medworm.com/index.php?rid=4102946&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00983.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4102946 Thu, 30 Sep 2010 23:00:00 +0100 4102946 http://www.medworm.com/index.php?rid=4038823&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00982.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4038823 Tue, 31 Aug 2010 23:00:00 +0100 4038823 http://www.medworm.com/index.php?rid=4029430&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00979.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4029430 Tue, 31 Aug 2010 23:00:00 +0100 4029430 http://www.medworm.com/index.php?rid=4020779&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00973.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4020779 Tue, 31 Aug 2010 23:00:00 +0100 4020779 http://www.medworm.com/index.php?rid=4016192&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00981.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=4016192 Tue, 31 Aug 2010 23:00:00 +0100 4016192 http://www.medworm.com/index.php?rid=3996515&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00976.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3996515 Tue, 31 Aug 2010 23:00:00 +0100 3996515 http://www.medworm.com/index.php?rid=3996514&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00975.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3996514 Tue, 31 Aug 2010 23:00:00 +0100 3996514 http://www.medworm.com/index.php?rid=3996513&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00977.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3996513 Tue, 31 Aug 2010 23:00:00 +0100 3996513 http://www.medworm.com/index.php?rid=3975023&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00978.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3975023 Tue, 31 Aug 2010 23:00:00 +0100 3975023 http://www.medworm.com/index.php?rid=3967563&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00974.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3967563 Tue, 31 Aug 2010 23:00:00 +0100 3967563 http://www.medworm.com/index.php?rid=3961328&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00971.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3961328 Tue, 31 Aug 2010 23:00:00 +0100 3961328 http://www.medworm.com/index.php?rid=3918549&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00960.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3918549 Tue, 31 Aug 2010 23:00:00 +0100 3918549 http://www.medworm.com/index.php?rid=3905846&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00972.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3905846 Fri, 27 Aug 2010 07:41:23 +0100 3905846 http://www.medworm.com/index.php?rid=3894069&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00970.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3894069 Tue, 24 Aug 2010 07:43:53 +0100 3894069 http://www.medworm.com/index.php?rid=3891141&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00964.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3891141 Mon, 23 Aug 2010 07:36:51 +0100 3891141 http://www.medworm.com/index.php?rid=3879129&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00967.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3879129 Thu, 19 Aug 2010 07:49:15 +0100 3879129 http://www.medworm.com/index.php?rid=3870972&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00969.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3870972 Tue, 17 Aug 2010 07:36:32 +0100 3870972 http://www.medworm.com/index.php?rid=3868087&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00962.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3868087 Mon, 16 Aug 2010 08:53:26 +0100 3868087 http://www.medworm.com/index.php?rid=3839111&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00943.x Summary (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3839111 Mon, 09 Aug 2010 11:26:23 +0100 3839111 http://www.medworm.com/index.php?rid=3839104&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00957.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3839104 Mon, 09 Aug 2010 11:26:18 +0100 3839104 http://www.medworm.com/index.php?rid=3905847&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00968.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3905847 Sat, 31 Jul 2010 23:00:00 +0100 3905847 http://www.medworm.com/index.php?rid=3879132&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00966.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3879132 Sat, 31 Jul 2010 23:00:00 +0100 3879132 http://www.medworm.com/index.php?rid=3879131&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00961.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3879131 Sat, 31 Jul 2010 23:00:00 +0100 3879131 http://www.medworm.com/index.php?rid=3879130&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00963.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3879130 Sat, 31 Jul 2010 23:00:00 +0100 3879130 http://www.medworm.com/index.php?rid=3868090&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00965.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3868090 Sat, 31 Jul 2010 23:00:00 +0100 3868090 http://www.medworm.com/index.php?rid=3868089&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00958.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3868089 Sat, 31 Jul 2010 23:00:00 +0100 3868089 http://www.medworm.com/index.php?rid=3868088&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00959.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3868088 Sat, 31 Jul 2010 23:00:00 +0100 3868088 http://www.medworm.com/index.php?rid=3804335&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00957.x The aim of this study was to determine morphological and functional changes of the elbow extensor muscles in response to a 12-week self-perceived maximal resistance training (MRT). Twenty-one healthy sedentary young men were engaged in elbow extensor training using isoacceleration dynamometry for 12 weeks with a frequency of five sessions per week (five sets of ten maximal voluntarily contractions, 1-min rest period between each set). Prior to, at 6 weeks and after the training, a series of cross-sectional magnetic resonance images of the upper arm were obtained and muscle volumes were calculated. Maximal and endurance strength increased (P (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3804335 Fri, 30 Jul 2010 23:00:00 +0100 3804335 http://www.medworm.com/index.php?rid=3770598&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00952.x Several studies have shown training induced morphological changes in the heart. Our aim was to assess how frequent, low-intensity exercise (walking and cycling) influences heart function and morphology in abdominally obese women. Fifty women with abdominal obesity (mean age 47·0 ± 7·5 years, waist circumference (WC) 103·2 ± 7·8 cm), free of cardiovascular problems were recruited. They were equipped with a bicycle and pedometers and instructed to start commuting in a physically active way for 6 months. Evaluation of cardiac function and morphology was performed using echocardiography (ECHO) before and after 6 months of training. The subjects increased significantly their daily physical activity. After 6 months, there was a significant decrease in WC (from 103·3 ± 7·9 to 100·8 ± 8... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3770598 Tue, 20 Jul 2010 23:00:00 +0100 3770598 http://www.medworm.com/index.php?rid=3752472&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00956.x Conclusion: Given those results, we could advocate a specific shoulder strengthening after LD transfer, focused mainly on the IRs and ADDs. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3752472 Wed, 14 Jul 2010 23:00:00 +0100 3752472 http://www.medworm.com/index.php?rid=3752473&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00950.x In conclusion, this study suggests that only TC peak torque correlated positively with serum fasting IGFBP-3 and insulin concentration. Adipocytokines leptin and adiponectin not correlated significantly with measured strength parameters in physically active postmenopausal women. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3752473 Tue, 13 Jul 2010 23:00:00 +0100 3752473 http://www.medworm.com/index.php?rid=3725916&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00954.x Morbid obesity is believed to limit cardiovascular auscultation. We compared audiocardiography to senior attending physicians using conventional stethoscopes in 190 individuals with morbid obesity. Overall, there were 128 (67·4%) women and 62 (32·6%) men with mean ages of 44·9 ± 12·3 and 51·3 ± 10·8 , respectively (P = 0·001). The overall body mass index (BMI) was 47·3 ± 8·5 kg m[minus]2. Of those with an S3 by audiocardiography (n = 7), one had a history of coronary artery disease (CAD), none had a history of heart failure, and one had a left ventricular ejection fraction (LVEF) 5) identified by acoustic cardiography while there were 42 (22·1%) heard by the stethoscope and it was heard with both methods in nine patients (21·4% concordance). There were no significant correlat... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3725916 Mon, 05 Jul 2010 23:00:00 +0100 3725916 http://www.medworm.com/index.php?rid=3725919&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00949.x Single-joint resistance training with blood flow restriction (BFR) results in significant increases in arm or leg muscle size and single-joint strength. However, the effect of multijoint BFR training on both blood flow restricted limb and non-restricted trunk muscles remain poorly understood. To examine the impact of BFR bench press training on hypertrophic response to non-restricted (chest) and restricted (upper-arm) muscles and multi-joint strength, 10 young men were randomly divided into either BFR training (BFR-T) or non-BFR training (CON-T) groups. They performed 30% of one repetition maximal (1-RM) bench press exercise (four sets, total 75 reps) twice daily, 6 days week[minus]1 for 2 weeks. During the exercise session, subjects in the BFR-T group placed elastic cuffs proximally on bo... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3725919 Sat, 03 Jul 2010 23:00:00 +0100 3725919 http://www.medworm.com/index.php?rid=3725918&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00953.x The purpose of this study was to compare between electrical muscle stimulation (EMS) and maximal voluntary (VOL) isometric contractions of the elbow flexors for changes in biceps brachii muscle oxygenation (tissue oxygenation index, TOI) and haemodynamics (total haemoglobin volume, tHb = oxygenated-Hb + deoxygenated-Hb) determined by near-infrared spectroscopy (NIRS). The biceps brachii muscle of 10 healthy men (23[ndash]39 years) was electrically stimulated at high frequency (75 Hz) via surface electrodes to evoke 50 intermittent (4-s contraction, 15-s relaxation) isometric contractions at maximum tolerated current level (EMS session). The contralateral arm performed 50 intermittent (4-s contraction, 15-s relaxation) maximal voluntary isometric contractions (VOL session) in a counterbalan... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3725918 Sat, 03 Jul 2010 23:00:00 +0100 3725918 http://www.medworm.com/index.php?rid=3725917&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00955.x Aim: To test if a small muscle injury influences the vascular reactivity to adrenaline in human skeletal muscle.Methods: Blood flow was measured by 133Xenon clearance in the gastrocnemius muscle of eight male subjects at basal and during i.v. infusion of adrenaline (0·1 nmol kg[minus]1 min[minus]1) or placebo. Measurements were done with (expts 2 and 3) or without (expt 1) the influence of a small muscle injury induced by inserting a microdialysis catheter. 133Xenon was administered either (expt 1) conventionally into the muscle via a fine needle, or (expts 2 and 3) through a fine tube close to the inserted microdialysis catheter. Expt 3 (control expt) was identical to expt 2 except that placebo was infused instead of adrenaline. Mean ± SEM, n = 8.Results: The blood flow tended to increa... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3725917 Sat, 03 Jul 2010 23:00:00 +0100 3725917 http://www.medworm.com/index.php?rid=3720497&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00948.x Conclusion: Anticipation appears not to influence the responses to progressive maximal and submaximal exercise tests with the same rate of increase in load. Normative values at submaximal exercise levels are not influenced by the targeted end point of exercise. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3720497 Fri, 02 Jul 2010 23:00:00 +0100 3720497 http://www.medworm.com/index.php?rid=3720504&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00947.x Phase-shift time curves following a bolus injection of gadolinium contrast agent were registered for grey-matter regions and large vessels in 14 subjects. Deconvolving a tissue phase-shift curve with a phase-based arterial input function resulted in a tissue residue function R(t). The peak value of R(t) provided a relative cerebral blood flow (CBF) index, while the area-to-height ratio of R(t) provided quantitative mean transit time (MTT). For comparison, quantitative CBF values in grey matter were acquired using model-free arterial spin labelling (ASL). The phase-based relative CBF estimates showed good linear correlation with ASL-based CBF (r = 0·82). Grey-matter MTT was 4·9 ± 1·1 s (mean ± SD). (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3720504 Thu, 01 Jul 2010 23:00:00 +0100 3720504 http://www.medworm.com/index.php?rid=3839107&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00949.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3839107 Wed, 30 Jun 2010 23:00:00 +0100 3839107 http://www.medworm.com/index.php?rid=3839106&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00950.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3839106 Wed, 30 Jun 2010 23:00:00 +0100 3839106 http://www.medworm.com/index.php?rid=3839105&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00952.x (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3839105 Wed, 30 Jun 2010 23:00:00 +0100 3839105 http://www.medworm.com/index.php?rid=3693606&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00951.x Conclusion: The RMMI is a reliable instrument and usable in both clinical practice and research. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3693606 Thu, 24 Jun 2010 23:00:00 +0100 3693606 http://www.medworm.com/index.php?rid=3693607&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00946.x Tissue dielectric constant (TDC) measurements at 300 MHz via the coaxial line reflection method are useful to evaluate local skin tissue water and its change, but virtually all available data relate to measurements on women. Because TDC values in part depend on skin thickness, we hypothesized that differences in male[ndash]female skin may be associated with male[ndash]female differences in TDC. To test this hypothesis, we compared TDC values in volar forearm skin of 60 young adult volunteers (30 men, 25·0 ± 2·5 years, 30 women, 27·4 ± 6·6 years) in the seated position using a probe with an effective measurement depth of 1·5 mm. Results showed that TDC values (mean ± SD) for men were significantly greater than for women (33·2 ± 4·0 versus 29·4 ± 2·7, P (Source: Clinical Physio... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3693607 Tue, 22 Jun 2010 23:00:00 +0100 3693607 http://www.medworm.com/index.php?rid=3646829&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00943.x In this study, we investigated the relation of PAT-AIx with measures of ventricular[ndash]vascular coupling.Methods: Pulse volume waves were measured via PAT and used to derive AIx. Using 2-dimensional echocardiography, effective arterial elastance index (EaI) was estimated as end-systolic pressure/stroke volume index. Left ventricular (LV) end-systolic elastance index (ELVI) was calculated as end-systolic pressure/end-systolic volume index. Ventricular[ndash]vascular coupling ratio was defined as EaI/ELVI.Results: Given the bi-directional nature of ventricular[ndash]vascular uncoupling as measured by echocardiography, patients were separated into three groups: low EaI/ELVI (1·2, n = 10). Adjusting for potential confounders (age, mean arterial pressure, height and heart rate), patients wi... Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3646829 Wed, 09 Jun 2010 23:00:00 +0100 3646829 http://www.medworm.com/index.php?rid=3646828&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00944.x Conclusion: Supporting the proposed definition of normovolemia, non-fasting, supine, healthy subjects are provided with a preload to the heart that does not limit SV suggesting that the upper flat part of the Frank-Starling relationship is reached. (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3646828 Wed, 09 Jun 2010 23:00:00 +0100 3646828 http://www.medworm.com/index.php?rid=3646827&cid=s_30481_37_f&fid=30481&url=http%3A%2F%2Fdx.doi.org%2F10.1111%252Fj.1475-097X.2010.00945.x Conclusion: Comprilan bandage has a positive effect on legs oedemas, visually as well as according to the patients well-being. The treatment does not have any significant influence on toe blood pressure. It cannot, however, be excluded that the use of comprilan bandage may compromise toe blood flow rate slightly ( (Source: Clinical Physiology and Functional Imaging) Clinical Physiology and Functional Imaging journals http://www.medworm.com/rss/comments.php?id=3646827 Wed, 09 Jun 2010 23:00:00 +0100 3646827