Medicine and Health Sciences Commons^™

Comparison Of Dual- And Tri-Axial Accelerometer Accuracy, Lindsay Powell Toth

Masters Theses

The purpose of this study was to investigate the accuracy of the Omron HJ-720ITC and the Fitbit Zip activity monitors with regard to step count, energy expenditure, and distance traveled measurements. The importance of this research rests in the success rates of pedometer-based physical activity interventions which have been shown to increase physical activity while also enabling weight loss and lowering blood pressure in the adult population. Activity monitors available for retail sale must be found accurate for proper participation in exercise interventions especially low-cost devices as used in this study.

In order to test the accuracy of the Omron …

Effects Of Various Partial Body Cooling Techniques On Core Temperature During Recovery From Prolonged Cycling-Induced Heat Stress, Afton Danielle Seeley

Masters Theses

The purpose of this study was to investigate the effects of using an ice-vest and a palm cooling device on core and skin temperatures, heart rate, and perceived thermal comfort during a one hour recovery period following exercise in the heat. Ten recreationally active adults cycled for one hour at 50% V0₂ peak on a cycle ergometer while exposed to 36°C 45%relative humidity environmental conditions. Following exercise, each subjectwas exposed to an ice vest, a palm cooling device, or a non cooling control while seated in the environmental chamber for 60 more minutes. No significant differencewas found betweenany of …

Gdnf Content And Nmj Plasticity In Slow And Fast Twitch Myofibers Follows Recruitment In Exercise, Amy Morrison Gyorkos

Dissertations

Glial cell-line derived neurotrophic factor (GDNF) supports and maintains the neuromuscular system during development and through adulthood by promoting neuroplasticity. GDNF may play a role in delaying the onset of aging and help compress morbidity by preventing motor unit degeneration. Exercise has been shown to alter GDNF expression differently in slow and fast twitch myofibers. The aim of this dissertation project is to determine if different intensities of exercise can promote changes in GDNF expression and neuromuscular junction (NMJ) morphology in slow and fast twitch muscle fibers. Skeletal muscle fibers were analyzed from adult Sprague Dawley rats aged 4 weeks …