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Seasonal Variation of Thermal Sweating


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タイトル: Seasonal Variation of Thermal Sweating
著者: Matsumoto, Takaaki / Kosaka, Mitsuo / Yamauchi, Masaki / Nakamura, Koichi / Yang, Guo-Jie / Amador Velazquez, Juan Jose
発行日: 1990年 6月30日
出版者: 長崎大学熱帯医学研究所 / Institute of Tropical Medicine, Nagasaki University
引用: 熱帯医学 Tropical medicine 32(2). p73-80, 1990
抄録: Although seasonal change in sweat response; the higher sweat rate, the shorter latent period for sweating, and the lower salt concentration in sweat in summer than in winter has been reported, the findings have hardly been led by accurate methods of measuring sweat rate. In order to confirm seasonal variation of sweating, sweat tests were carried out in summer and in winter for each subject. Local sweat rate was recorded before, during and after heat load by using capacitance hygrometer-sweat capture capsule method, which enabled the determination of local sweat rate highly sensitively and continuously. Sweat-onset time and local sweat volume were compared between both seasons. Sweat-onset time was 10.82±1.21 min (chest), 11.85±1.26 min (abdomen) in summer. It was 16.33±1.95 min (chest), 16.42±1.91 min (abdomen) in winter, P<0.005 (chest) and P<0.05 (abdomen) between both seasons. Local sweat volume was 121.23±20.90 mg/capsule (chest), 48.46±10.83 mg/capsule (abdomen) in summer. It was 36.59±10.83 mg/capsule (chest), 19.20±5.88 mg/capsule (abdomen) in winter, P<0.01 (chest) and P<0.05 (abdomen) between both seasons. Seasonal variation of thermal sweating was reconfirmed by the more accurate method in this study. Furthermore, no changes in threshold for sweating in oral temperature was observed. It is suggested that the mechanism of seasonal acclimatization is different from that of artificial heat acclimation.
URI: http://hdl.handle.net/10069/4565
ISSN: 03855643
資料タイプ: Departmental Bulletin Paper
出現コレクション:第32巻 第2号

引用URI : http://hdl.handle.net/10069/4565

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