View clinical trials related to Acute Exercise.
Filter by:The purpose of this study is to understand how college students' biomarkers change with a relatively short bout of moderate-intensity physical activity. The investigators are comparing biomarkers in between self-reported physically active and sedentary students in terms of their percent difference and change. The investigators are also studying physically active versus sedentary college students' mental health. This is a mentored student research project in the investigator's lab (not part of a thesis, dissertation, or other coursework requirements), where multiple students have developed research questions using the same study design.
This project will involve administering a multi-strain probiotic supplement to investigate the capacity to improve exercise performance and/or recovery. This will be done by assessing physiological measures (e.g. performance and muscle soreness), biochemical measures (e.g. oxidative stress and inflammation), and microbial diversity (i.e. associations with bacteria present in the gut). Participants will be well-trained, recreational exercisers and will visit the laboratory a total of eight times, including an 8-week probiotic vs placebo supplementation period.
Blood flow restricted (BFR) resistance exercise has been shown to improve skeletal muscle adaptations to low load resistance exercise. One of many adaptations with resistance training is neural adaptations that occur within the first few weeks of resistance training. It has been hypothesized that these neural adaptations are blunted when using blood flow restricted exercise. Therefore, the investigators propose to examine the muscle activation created by resistance exercise with different intensities with blood flow restriction and without blood flow restriction in sedentary compared to resistance-trained individuals. The investigators will recruit and completely study up to 30, previously untrained and resistance-trained, healthy, college-aged (18-40 years) males. Participants will come in the laboratory for 5 total visits. These visits will consist of a screening/familiarization visit, a strength testing visit, and 3 acute exercise visits. The acute exercise visits will consist of 2 blood flow restricted resistance sessions at different intensities and a traditional high load resistance exercise session. The 3 acute exercise visits will be randomized. The investigators will measure muscle mass (appendicular lean mass) using Dual Energy X-Ray Absorptiometry, muscle strength and endurance using isotonic and isokinetic testing, and muscle activation using surface electromyography. The investigators will also use near infrared spectroscopy (NIRS) to measure the muscle tissue (oxygen) saturation index (TSI) in the vastus lateralis during exercise. Finally, the investigators will also draw blood before and after each exercise session to measure hormones, metabolites, and markers of inflammation using commercially available assays (e.g., ELISAs).
Endurance athletes will be invited to participate in the following study. Subjects will visit the laboratory on three occasions, each time following an overnight fast. Briefly, following an initial assessment and familiarisation, participants will be required to complete an endurance bout of cycling exercise in hot environmental conditions before and after 4 weeks of supplementing with a probiotic or placebo. During the exercise bouts, breath samples will be collected for measurements of whole-body metabolism, blood samples will be collected to assess serum metabolites and markers of gastrointestinal (GI) damage, and subjective measures of effort and symptoms of GI thermal distress will be collected. Before and after each exercise bout, participants will be required to provide a faecal sample for analysis of the microbiome and GI inflammation
The main objective of this project is to study the diurnal variation of the effect of exercise on glycemic metabolism and fat oxidation in humans.
The purpose of this study is to examine the human thermoregulatory impact of applying a commercially available menthol gel (BioFreeze) to the skin prior to moderate intensity walking under heated conditions. Experimental Visits will consist of 30 min of treadmill walking at a moderate pace (3.5 mph, 5% grade) under hot conditions (38°C, 60%RH) and will be randomized and counterbalanced for BioFreeze or a hypoallergenic gel (control) application. Gels will be applied to areas commonly exposed during outdoor activity in warm conditions (shoulder to wrist, mid thigh to ankle). Accordingly, participants will wear shorts and a tank top shirt during exercise. Core temperature, skin temperature, galvanic skin response, laser doppler blood flow, and heart rate will be continuously recorded throughout the exercise bout via an integrated analog to digital converter. Sweat will be collected during exercise using commercially available absorbent patches. Thermal sensation will be assessed throughout exercise via the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) thermal sensation likert scale (cold to hot). Lastly, nude body weight will be recorded pre and post exercise for sweat rate determination. The BioFreeze and control trials will be separated by a 7-14 day washout period.
The purpose of this study is to examine the human thermoregulatory impact of applying a commercially available capsaicin gel to the skin prior to moderate intensity walking under heated conditions. Experimental Visits will consist of 30 min of treadmill walking at a moderate pace (3.5 mph, 5% grade) under hot conditions (38°C, 60%RH) and will be randomized and counterbalanced for capsaicin gel or a hypoallergenic gel (control) application. Gels will be applied to areas commonly exposed during outdoor activity in warm conditions (shoulder to wrist, mid thigh to ankle). Accordingly, participants will wear shorts and a tank top shirt during exercise. Core temperature, skin temperature, galvanic skin response, laser doppler blood flow, and heart rate will be continuously recorded throughout the exercise bout via an integrated analog to digital converter. Sweat will be collected during exercise using commercially available absorbent patches. Thermal sensation will be assessed throughout exercise via the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) thermal sensation likert scale (cold to hot). Lastly, nude body weight will be recorded pre and post exercise for sweat rate determination. The capsaicin and control trials will be separated by a 7-14 day washout period
Vitamin D deficiency is considered a public health priority in the UK, with approximately 30-40% of the UK population being deemed vitamin D deficient during winter months. Current government strategies to improve vitamin D status amongst the UK population involve dietary supplementation, however, it has been shown that excess adiposity reduces the impact of dietary supplementation with vitamin D. One potential explanation for this observation is that vitamin D becomes sequestered in adipose tissue. We hypothesise that exercise may facilitate the mobilisation of vitamin D from adipose tissue and thus increase circulating vitamin D (25OHD) concentrations. Little is currently known as to whether a single bout of exercise affects vitamin D status, with a handful of studies demonstrating contradictory findings. This research will examine the effect of an acute bout of exercise (treadmill-based at 60% VO2 Max for 60 minutes) on vitamin D status (serum 25(OH)D) in healthy community-dwelling adults.
To determine the effects of moderate intensity exercise and caffeine on working memory in deprived caffeine consumers.
The purpose of this study is to determine the ability of acute exercise to regulate fat metabolism in muscle of overweight and obese people compared to lean people.