Exercise Clinical Trials

The goal of this study is to compare two types of exercises, isometric exercise (like squats and planks) and aerobic exercise (such as running), to see which one is more effective at improving blood pressure in teenagers aged 13 to 17.5 years. The main question the study aims to answer is: - Do the effects of one session of isometric exercise on the blood pressure of adolescents compare to the effects of one session of aerobic exercise? Adolescents with overweight or obesity may qualify for this study. Participants will be randomly assigned to either a single session of isometric exercise or a single session of aerobic exercise. * Participants will attend 3 study visits in total. * Study visits should be completed within 4 weeks of enrollment. * At the initial visit, samples (example: blood) will be collected and body measurements will be taken. * Participants will be asked to answer questionnaires (diet, growth, and others) * At visit 2, participants will have their blood pressure measured using a 24 hour blood pressure monitor. * At visit 3, participants will participate in a single session of either aerobic or isometric exercise. They will wear a 24-hour blood pressure monitor immediately after the exercise session. Read Less

The purpose of this study is to determine the feasibility and effects of an adapted Exercising Together, a partnered resistance training program, on the physical and mental health of prostate cancer survivors and their informal caregiver. The Exercising Together program is designed to promote teamwork during supervised group exercise classes delivered remotely through videoconferencing software. The intervention period will be 3-months with a 3-month follow-up. Read Less

Hispanic Americans are the fastest growing older adult group in the United States, disproportionally increasing the risk of an Alzheimer's disease and related dementias diagnosis. Efforts to reduce this risk and mitigate the related cognitive/physical declines are critical. The aim of this study is to assess the feasibility of enrolling older adults into an aging trajectory cohort, while generating preliminary data on associations of physical and cognitive aging trajectories. Our secondary objective is to generate preliminary data on the association of standard measures of physical activity and physical function with cognitive status. This study fits within our longitudinal research goal to reduce dementia incidence by understanding the mechanisms that drive the cognitive-physical aging trajectory. Read Less

The purpose of this study is to test a culturally tailored, smartphone-delivered intervention designed to increase physical activity and reduce risk for heart disease and type 2 diabetes among African American women. Read Less

The primary goal of this project is to determine the effects of exercise on the gut microbiome in breast cancer survivors and determine how these changes may relate to psychosocial symptoms such as fatigue. Read Less

The purpose of this study is to test whether a natural product supplement can potentiate the increase in collagen synthesis following the ingestion of collagen protein. The investigators have developed a model of natural (GRAS certified) products that stimulate collagen synthesis, in vitro. The investigators will determine whether the natural product supplement can potentiate the collagen synthetic response to the ingestion of collagen protein. Basal and fed serum will be isolated and these samples will be used to treat human engineered ligaments. Read Less

The purpose of this randomized controlled trial is to establish the effectiveness of a culturally targeted and individually tailored behavioral intervention to promote maternal glucose metabolism in African American women. Read Less

Life in space is completely void of physical and environmental stress. It is well known that living things need regular physical stress (e.g. exercise) to remain strong, functional and healthy. More and more research is showing that regular environmental stress, for example heat and hypoxia, can further improve physical health. Astronauts aboard the international space station (ISS) exercise for 1-2 hours every day to avoid physical deconditioning that would otherwise cause them to age rapidly in space. Although physical exercise is very effective in remedying this deconditioning, today's astronauts still have physiological changes that indicate accelerated aging. This is a cause for concern given NASA's priority to travel to mars within the next decade; a mission that will require at least double the duration in space for our astronauts. The investigators think that the complete absence of environmental stress, i.e., heat, may be contributing to the accelerated aging that occurs during spaceflight. Our study will assess the health effects of adding heat stress to exercise that could be performed in space by astronauts. The goal is to inform best practice for astronauts to avoid physical deconditioning during long-duration spaceflight. This information will also be relevant to life on earth as spaceflight is a model of inactivity here on earth. Therefore, the potential benefits of adding heat stress will likely translate to life in space and on earth. Read Less

This randomized controlled crossover trial of 36 pregnant individuals with gestational diabetes (GDM) or gestational glucose intolerance (GGI) will: 1. Determine the effects of physical activity (PA) timing, specifically 30 minutes of moderate intensity walking or stepping in the morning (between 5am-9am, within 30-40 minutes of starting breakfast), versus late afternoon/evening (between 4pm-8pm, within 30-40 minutes of dinner) on glucose across the 24-hour cycle. 2. Explore the potential effects of the timing of PA on sleep and mood state. Read Less

Exercised induced hypoalgesia (EIH) (reduction in pain) after exercise has been studied in the literature, but no comparisons have been made specifically looking at different types of exercise (isometric/dynamic moving through a range of motion with resistance versus isotonic/applying static resistance to a joint not moving) with neck muscle strengthening. This study will explore to see if one form of exercise is superior to the other in providing EIH. Another benefit of exercise is improving proprioception (knowing where our body is in space). Again no specific investigation has been done comparing isometric versus isotonic exercises for neck muscles. Both of these exercises are often prescribed in physical therapy so further understanding the benefits of them can help improve the prescription of exercises for patients. Read Less

Heart rate variability (HRV) is a measure of the variation in time between each heartbeat. It is an indirect and ubiquitous biomarker of performance readiness and recovery measured by most consumer-grade wearable fitness trackers. However, there is little documented on the relationship between HRV, training load, and performance measures in the Real-World. Whoop wrist-worn activity trackers have been validated against the gold-standard Electrocardiography (ECG) for HRV and HR measurements. Whoop leverages photoplethysmography (PPG) technology to continuously track (HR, HRV, respiratory rate, energy expenditure) and provides, daily, individual insights, trends, and coaching to improve strain, sleep, and recovery. Research has demonstrated that heart rate variability (HRV) guided training may be more optimal compared to predetermined training for aerobic exercise improvements. The purpose of this study is to assess the feasibility of providing personalized training recommendations based on HRV measured by a consumer-grade wearable (Whoop) in a real-world setting to better understand the HRV relationship with performance. Read Less

The purpose of this study is to determine if an acute bout of removal of exercise reduces enothelial function and glycemic control in an active, older adult population; and whether a 3 day return to exercise restores this response. Glycemic control is the blood glucose response following the consumption of a meal. It is an indicator of insulin resistance (or type 2 diabetes) and impaired glycemic control has been suggested to lead to cardiovascular disease. Endothelial function has been shown to be improved by chronic or acute increases in physical activity. Both of these have been shown to be impaired to acute bouts of inactivity in young populations; however the impact of acute inactivity in older adults is less understood. In this proposal the investigators will examine 1)how quickly impairments in glycemic control occur to acute physical inactivity in older adults who exercise, 2) how quickly impairments in endothelial function occur to acute inactivity in older adults who exercise, and 3) whether 3 days of a return to exercise restores these responses. Read Less