Effects of Air Humidity on Physiological Responses of Men and Women During Prolonged Exercise
【Supercategory：7. DESCENTE SPORTS SCIENCE Subcategory：7.6 Vol.6】
Six male and 6 female students with similar weight and physical fitness worked out on a bicycle ergometer (100W) for 60min at different air humidities (rh : 35%, 60% and 85%). Air temperature was kept 30°C. Evaporated sweat rate (ESR), unevaporated sweat rate (USR), rectal temperature (Tsk), mean skin temperature (Tsk), heart rate (HR) and oxygen uptake (VO₂) were recorded. There were no significant differences of Tsk and VO₂ among three humidities for both sexes. USR, Tsk and HR at high humidity were significantly higher than those at low humidity for both sexes. The increase in USR at high humidity for men was larger than that for women. There were no significant sex differences of ESR, tre, Tsk and HR at each humidity. Lower increase in USR and oxygen requirement for women than for men at high humidity would be advantage to temperature regulation in women to prolonged exercise under the condition of humid heat.
DESCENTE SPORTS SCIENCE Vol.6/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
DESCENTE SPORTS SCIENCE Vol.6/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
| Researcher | Yutaka Tochihara*1, Tadakatsu Ohnaka*1, Shinya Yamazaki*1, Masatoshi Tanaka*1, Keiichi Yoshida*1, Shoukichi Ogawa*2, Shouji Igawa*3, Yumi Ito*4, Kayoko Watanabe*4 |
|---|---|
| University or institution | *1 Department of Hygiene, School of Medicine, Showa University, *2 Department of Physiological Hygiene, The Institute of Public Health, *3 Laboratory of Physical Fitness, Nippon College of Physical Education, *4 Laboratory of Anthropology, Japan Women's College of Physical Education |
Keywords
Evaporated sweat rate (ESR), unevaporated sweat rate, sex differences