Effects of Cooling Portions of the Head on Human Thermoregulatory Response
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概要
- 論文の詳細を見る
Seven healthy young male students participat-ed in this study. Each subject sat on a chair in an anteroom at 25℃ for 30 min and then entered a climatic chamber, controlled at 40℃ and R.H. 50%, and sat on a chair for 90 min. Cooling of frontal portion including the region around the eyes (FC),occipital portion (OC), and temporal portion (TC) began after 50 min of entering. An experiment without head cooling (NC) was also made for the control measurement. Thermal comfort and thermal sensation were improved by head cooling, but response was the same regardless of portion cooled. Although rectal temperature, mean skin temperature and heart rate showed no significant effect due to head cooling, forearm skin blood flow (FBF), sweat rate (SR), and body weight loss (ΔWt) had a tendency to be depressed. FBF in FC and TC decreased during head cooling, but that in OC and NC did not change significantly, while SR in FC was depressed.ΔWt showed total sweating to decrease by FC and TC, and FC to have greater inhibitory effect on sweating than OC. Thermal strain was evaluated by the modified Craig Index (I_s). I_s in FC decreased significantly more than in NC. Cooling of other portions of the head had no significant effect on I_s. Cooling of the frontal portion of the head may thus be concluded to have the most effect on thermoregulatory response in a hot environment.
- 日本生理人類学会の論文
著者
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菊池 安行
武蔵野女子大学文学部
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Kikuchi Y
Tokyo Metropolitan University Of Health Sciences
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KATSUURA Tetsuo
Department of Design Science, Graduate School of Engineering, Chiba University
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Yukawa Kouichi
Department Of Ergonomics Faculty Of Engineering Chiba University
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lwanaga Koichi
Department of Ergonomics, Faculty of Engineering, Chiba University
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Kikuchi Yasuyuki
Department of Ergonomics, Faculty of Engineering, Chiba University
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原田 一
千葉大学
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YUKAWA Kouichi
HC Nagasaki University
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Harada Hajime
Departmeprt of Ergonomics, Faculty of Engineering, Chiba University
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Kikuchi Yasuyuki
Department Of Human Science Faculty Of Literature Musashino Women's University
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Katsuura Tetsuo
Department Of Design And Architecture Chiba University
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Tomioka Kei
Department of Ergonomics, Faculty of Engineering, Chiba University
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Harada Hajime
Department Of Ergonomics Faculty Of Engineering Chiba University
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Lwanaga Koichi
Department Of Ergonomics Faculty Of Engineering Chiba University
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Tomioka Kei
Department Of Ergonomics Faculty Of Engineering Chiba University
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Harada Hajime
Chiba University
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Harada Hajime
Department Of Ergonomics. Faculty Of Engineering Chiba University
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Harada Hajime
Department Of Ergonomics Faculty Of Engineering Chiba University.
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Harada Hajime
Department Of Chemistry University Of Tsukuba
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Kikuchi Yasuyuki
Department Of Ergonomics Chiba University
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