暑熱環境下での運動時における輻射熱が生体に及ぼす影響

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It is considered very important for evaluation of effective exercise and conditioning to analysis physiological responses, the control of body temperature in particular, during cutdoor exercise in the hot environment. The purpose of this study was to investigate the influences of radiant heat during outdoor running. The environmental temperature and physiological responses in a healthy male adult who ran between 7.00a.m. and 10.00a.m. over a period of 17 days in the summer of 2000 were investigated. The mean dry bulb temperature during the 17 days of running was 30.21℃, the mean wet bulb temperature was 26.05℃, the mean glove temperature was 38.11℃, and Wet Bulb Glove Temperature (WBGT) was 34.91℃. These temperatures indicate a high risk of heat exhaustion. The mean running time was 72.6 min, the mean weight loss ratio was 3.7%, the mean elevation of tympanic temperature was 0.54℃, and the mean heart rate was 129.1 beats/min. There was a correlation between the weight loss ratio and elevation of tympanic temperature (correlation coefficient, 0.749). The elevation of tympanic temperature was highly correlated with the environmental temperature. The correlation coefficient was 0.822 with the glove temperature, 0.815 with the effective radiant heat and 0.829 with WBGT. Human tympanic temperature reflects the temperature in the hypothalamus, and it was suggested that it is necessary to sufficiently consider a counterplan of heat disorders under a condition of high outdoor radiant heat.
長崎大学の論文
2001-06-27

暑熱環境下での運動時における輻射熱が生体に及ぼす影響

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