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Acute supplementation of L-arginine neither affects strength performance nor nitric oxide production.
CONCLUSIONS: These results do not support the use of L-arginine as an ergogenic aid for strength performance, at least in context of acute use immediately before resistance exercise performance.
PMID: 27623757 [PubMed - as supplied by publisher]
Source: Journal of Sports Medicine and Physical Fitness - September 15, 2016 Category: Sports Medicine Tags: J Sports Med Phys Fitness Source Type: research
Ankle flossing alters periarticular stiffness and arterial blood flow in asymptomatic athletes.
CONCLUSIONS: This is the first study demonstrating decreased AC and ATFL stiffness and reactive hyperaemia to be key mechanisms of ankle flossing. Additional studies must be conducted to determine whether changes in biomechanical properties influence dynamic ankle stability.
PMID: 32586081 [PubMed - as supplied by publisher]
Source: Journal of Sports Medicine and Physical Fitness - June 28, 2020 Category: Sports Medicine Tags: J Sports Med Phys Fitness Source Type: research
Changes in the physiological strain and graded exercise performance due to warming or cooling of the lower body in a temperate environment.
CONCLUSIONS: These results suggest that although the cardiovascular and thermoregulatory strain is higher under warming conditions than cooling conditions, the exercising muscle temperature does not affect the performance of a GXT lasting approximately 15 min in a temperate environment.
PMID: 32936567 [PubMed - as supplied by publisher]
Source: Journal of Sports Medicine and Physical Fitness - September 17, 2020 Category: Sports Medicine Tags: J Sports Med Phys Fitness Source Type: research
Infrared Thermography in Wound Care, Surgery, and Sports Medicine: A Review
For many years, the role of thermometry was limited to systemic (core body temperature) measurements (e.g., pulmonary catheter) or its approximation using skin/mucosa (e.g., axillary, oral, or rectal) temperature measurements. With recent advances in material science and technology, thermal measurements went beyond core body temperature measurements and found their way in many medical specialties. The article consists of two primary parts. In the first part we overviewed current clinical thermal measurement technologies across two dimensions: (a) direct vs. indirect and (b) single-point vs. multiple-point temperature measu...
Source: Frontiers in Physiology - March 3, 2022 Category: Physiology Source Type: research
Nuclear Medicine Radiation Exposure and COVID-19 Pertaining to V/Q Lung Studies; A Technologist Perspective
Conclusion: Eliminating the ventilation portion of the exam and performing SPECT/CT provides for a considerably faster exam time with comparable radiation exposure to the patient. Furthermore, it significantly reduces the radiation exposure to a technologist by decreasing the time spent with the patients, is less reliant of patient cooperation and provides for technically better-quality studies. The additional major benefit is reducing the COVID-19 exposure to technologists during the pandemic.
Source: Journal of Nuclear Medicine - May 18, 2021 Category: Nuclear Medicine Authors: Broska, H., Webb, C., Frye, S., Muzaffar, R., Osman, M. Tags: Diagnostic & amp; Therapeutic Nuclear Medicine and Instrumentation amp; Data Analysis Source Type: research
Exercise Effects on Erythrocyte Deformability in Exercise-induced Arterial Hypoxemia
Int J Sports MedDOI: 10.1055/s-0034-1394395Exercise-induced arterial hypoxemia (EIAH) is often found in endurance-trained subjects at high exercise intensity. The role of erythrocyte deformability (ED) in EIAH has been scarcely explored. We aimed to explore the role of erythrocyte properties and lactate accumulation in the response of ED in EIAH. ED was determined in 10 sedentary and in 16 trained subjects, both before and after a maximal incremental test, and after recovery, along with mean corpuscular volume (MCV) and red blood cell lactate concentrations. EIAH was found in 6 trained subjects (∆SaO2=−8.25±4.03%). Se...
Source: International Journal of Sports Medicine - November 27, 2014 Category: Sports Medicine Authors: Alis, R.Sanchis-Gomar, F.Ferioli, D.Torre, A. La.Blesa, J. R.Romagnoli, M. Tags: Physiology & Biochemistry Source Type: research
Intramuscular Perfusion Response in Delayed Onset Muscle Soreness (DOMS): A Quantitative Analysis with Contrast-Enhanced Ultrasound (CEUS)
Int J Sports Med DOI: 10.1055/s-0043-112501The purpose of this study was to analyse intramuscular perfusion response in ultrastructural muscle lesions, by applying contrast-enhanced ultrasound (CEUS) to a delayed onset muscle soreness (DOMS) model. Results of this analysis were compared to high-resolution 3 Tesla MRI T2-weighted sequences. 14 healthy participants were recruited. Average perfusion parameters, represented as Peak enhancement (contrast agent inflow) and wash-in area under curve (WiAUC) of the gastrocnemius (GM) and soleus muscle (SM) were assessed before (baseline) and 60 h after inducing DOMS by eccentric ...
Source: International Journal of Sports Medicine - August 10, 2017 Category: Sports Medicine Authors: Kellermann, Marion Heiss, Rafael Swoboda, Bernd Gelse, Kolja Freiwald, J ürgen Grim, Casper Nagel, Armin Uder, Michael Wildner, Dane Hotfiel, Thilo Tags: Orthopedics & Biomechanics Source Type: research
Cooling During Exercise May Induce Benefits Linked to Improved Brain Perfusion
In conclusion, wearing a cooling vest during submaximal exercise improves perceptual and physiological responses in humid temperate conditions, which may be due to a better blood perfusion at the brain level and a better parasympathetic reactivation. [...] © Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents | Abstract | Full text
Source: International Journal of Sports Medicine - September 12, 2020 Category: Sports Medicine Authors: Douzi, Wafa Dugu é, Benoit Theurot, Dimitri Vinches, Ludwig Hall é, Stéphane Dupuy, Olivier Tags: Physiology & Biochemistry Source Type: research
Role of Regular Physical Exercise in Tumor Vasculature: Favorable Modulator of Tumor Milieu
Int J Sports Med DOI: 10.1055/a-1308-3476The tumor vessel network has been investigated as a precursor of an inhospitable tumor microenvironment, including its repercussions in tumor perfusion, oxygenation, interstitial fluid pressure, pH, and immune response. Dysfunctional tumor vasculature leads to the extravasation of blood to the interstitial space, hindering proper perfusion and causing interstitial hypertension. Consequently, the inadequate delivery of oxygen and clearance of by-products of metabolism promote the development of intratumoral hypoxia and acidification, hampering the action of immune cells and resulting...
Source: International Journal of Sports Medicine - December 11, 2020 Category: Sports Medicine Authors: Esteves, M ário Monteiro, Mariana P. Duarte, Jose Alberto Tags: Review Source Type: research
The Effects of Physical Exercise on Tumor Vasculature: Systematic Review and Meta-analysis
Int J Sports Med DOI: 10.1055/a-1533-1876A wealth of evidence supports an association between physical exercise, decreased tumor growth rate, and reduced risk of cancer mortality. In this context, the tumor vascular microenvironment may play a key role in modulating tumor biologic behavior. The present systematic review and meta-analysis aimed to summarize the evidence regarding the effects of physical exercise on tumor vasculature in pre-clinical studies. We performed a computerized research on the PubMed, Scopus, and EBSCO databases to identify pre-clinical studies that evaluated the effect of physical exercise on tumor ...
Source: International Journal of Sports Medicine - August 2, 2021 Category: Sports Medicine Authors: Esteves, M ário Monteiro, Mariana P. Duarte, Jose Alberto Tags: Review Source Type: research
Regular Voluntary Running is Associated with Increased Tumor
Vascularization and Immune Cell Infiltration and Decreased Tumor Growth in
Mice
Int J Sports Med DOI: 10.1055/a-2008-7732Tumors present dysfunctional vasculature that limits blood perfusion and hinders
immune cells delivery. We aimed to investigate if regular voluntary running
promotes tumor vascular remodelling, improves intratumoral immune cells
infiltration and inhibits tumor growth. Tumors were induced in C57BL/6
male mice (n=28) by subcutaneous inoculation in the dorsal region with a
suspension of RM1 cells (1.5×105
cells/500 µL PBS) and randomly allocated into two
groups: sedentary (n=14) and voluntarily exercised on a wheel
(n=14). Seven mice from eac...
Source: International Journal of Sports Medicine - March 17, 2023 Category: Sports Medicine Authors: Esteves, M ário Silva, Carina Bovolini, Ant ónio Pereira, Sofia S. Morais, Tiago Moreira, Ângela Costa, Madalena M. Monteiro, Mariana P Duarte, Jose Alberto Tags: Physiology & Biochemistry Source Type: research
Effects of external Counterpulsation on Post-Exercise Recovery in Elite League Players.
CONCLUSIONS: Exercise performance and hormonal indicators of stress were improved, and inflammation markers were reduced following acute ECP.
PMID: 30958058 [PubMed - as supplied by publisher]
Source: International Journal of Sports Physiology and Performance - April 10, 2019 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research
Insights for Blood Flow Restriction and Hypoxia in Leg Versus Arm Submaximal Exercise.
CONCLUSIONS: The combination of BFR and/or hypoxia led to increased [tHb] in both limbs likely due to greater vascular resistance; further, arms were more responsive than legs. This possibly influences the maintenance of oxygen delivery and enhances perfusion pressure, suggesting greater vascular reactivity in arms than in legs.
PMID: 32023543 [PubMed - as supplied by publisher]
Source: International Journal of Sports Physiology and Performance - February 7, 2020 Category: Sports Medicine Tags: Int J Sports Physiol Perform Source Type: research
Experiences and perceptions of nuclear medicine technologists in the assessment of myocardial perfusion image quality
Conclusion: Despite the shared responsibility in the assessment of myocardial perfusion image quality with nuclear medicine physicians, the nuclear medicine technologists considered themselves playing a major role. However, resources to facilitate the assessment of image quality are considered necessary and should be available to support the nuclear medicine technologists to submit images of optimum quality for interpretation.PMID:33820863 | DOI:10.2967/jnmt.120.255125
Source: Journal of Nuclear Medicine Technology - April 6, 2021 Category: Nuclear Medicine Authors: Lucky Rachel Chipeya Source Type: research
