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Perceptual Variations In Thermoregulation During Exercise In A Hot Environment, William C. Alger
Perceptual Variations In Thermoregulation During Exercise In A Hot Environment, William C. Alger
Electronic Theses and Dissertations
ABSTRACT
Professionals are seeking to find ways to prevent exertional heat illness (EHI) in populations working in hot environments as well as populations that are physically active. The purpose of the present study was to evaluate individuals’ ability to accurately perceive core temperature ranges associated with homeothermic and EHI temperatures during exercise. Ten physically active males exercised on a treadmill at a self-selected rate until core temperature reached 39°C. Participants rated perceived core and skin temperature on 100 mm scales each time core temperature increased 0.25˚ C (37.5-39.0˚ C), along with thermal comfort and sweating sensation. During exercise core temperature …
Effect Of Fluid Temperature And Volume On Thermoregulation In The Heat, Michelle M. Johannsen
Effect Of Fluid Temperature And Volume On Thermoregulation In The Heat, Michelle M. Johannsen
Graduate Student Theses, Dissertations, & Professional Papers
The link between thermoregulation, hydration status, and exercise performance in hot humid environments is controversial. The purpose of this study was to evaluate the effects of volume and temperature of ingested fluid on hydration status, thermoregulation and exercise performance. Recreationally active males (N=11, 24.7±5.9 years; VO2max=58.2±6.0 mL/kg/min) completed two 3-hour intermittent exercise trials in the heat (31o WBGT=35.5°C with 50% humidity). Participants consumed either 1 mL/kg body weight (BW) of room temperature water (35.5°C; ROOM) or 0.5 mL/kg of an ice slurry mixture (~0°C; COLD) every ten minutes throughout the trials in a randomized crossover design. Subjects …