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ID 26013
本文ファイル
別タイトル
Functional Differentiation of Thermoregulation, Particular Referenecs to Seasonal Variation of Whole Boby Sweat Rate of Exercising Man
著者
鳥井 正史
佐々木 隆
中山 英明
キーワード
Seasonal and natural acclimatization
Warm and cold seasons
Temperature regulation
Thermal response
Moderate exercise
NDC
医学
抄録(英)
We investigated the seasonal variation of sweating response during exercise. Four adult heaithy men repeated a moderate bicycle exercise (60 watts) in a climatic chamber of an ambient temperature of 30瀉 (relative humidity, 45%) in winter, spring, summer, and fall. In summer, sweat rate immediately increased as soon as the exercise started, whereas in winter in a few minutes. The mean sweat rate during exercise was significantly different between winter and summer. The transient reduction of the T_SK was observed at the beginning of the exercise in winter. The T_SK decreased in proportion to increasing of sweat rate in each season. Significantly negative correlation were found between sweat rate and the rate of change of T_SK during exercise in each season. The slope and intercept of regression line were significantly different between winter and summer. The index of sweating was made available for the relative value, changing rate against annual mean value of total sweat loss (ΔSR, %). The relative value rather than the absolute value (i.e., expressed as g・m^<-2>・h^<-1>) corrected well with skin temperature. It is suggested that the present results may reflect adapted changes in the thermoregulatory mechanisms to seasonal acclimatization. Moreover, the fall in skin temperature during exercise may be not due to increased evaporative cooling, but may be the result of vasoconstriction porbably caused by non-thermal factors.
掲載誌名
The Annals of physiological anthropology : 生理人類学研究会会誌
10巻
3号
開始ページ
163
終了ページ
170
出版年月日
1991-07-01
出版者
日本生理人類学会
ISSN
0287-8429
NCID
言語
日本語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
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publisher
権利情報
日本生理人類学会
本文データは学協会の許諾に基づきCiNiiから複製したものである
関連情報URL
部局名
総合科学研究科