Physiological and subjective responses under warm environments in young women sensitive to heat

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  • Ohnaka Tadakatsu
    Department of Living Environmental Science, Faculty of Human Environmental Science, Fukuoka Women's University
  • Nonaka Mayu
    Department of Living Environmental Science, Faculty of Human Environmental Science, Fukuoka Women's University

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  • やや暑い環境での青年女子における暑がりの生理・心理反応
  • ヤヤ アツイ カンキョウ デ ノ セイネン ジョシ ニ オケル ショガリ ノ セイリ ・ シンリ ハンノウ

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The subjects were 20 young women (21.3±0.6 year old) and divided into two groups, an HS group (being sensitive to the heat, n=12) and an NS group (being non-sensitive to the heat, n=8) due to self-judged. Skin temperatures at 7 sites, oral temperature, humidity between skin and clothes, thermal sensation and thermal comfort were measured during the experiments. The three test sessions were conducted for each subject: 60-min exposure at 28℃, 30℃, 32℃ (50±10%RH) after 20-min baseline at 26±1℃ (60±10%RH). The mean skin temperatures after 60-min exposure at 28℃were 33.6℃ for the HS group and 33.2℃ for the NS group, which differed significantly between the groups (P<0.01). The HS group tended to produce more sweat and sweat earlier than the NS group, but showing no significant differences. There were significant correlations between mean skin temperatures and comfort sensation in both groups. The regression coefficient of the HS group's regression line was bigger than that of the NS group's. The HS group tended to complain of thermal discomfort with increase in skin temperatures compared with the NS group.

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