高温環境における局所冷却時の生理応答 : 人体熱モデルによる解析と被験者実験  [in Japanese] Physiological response to partial cooling in a warm environment : Numerical analysis and subject experiment  [in Japanese]

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Author(s)

    • 森 郁惠 MORI Ikue
    • 京都大学大学院工学研究科建築学専攻 Department of Architecture and Architectural Engineering, Graduate School of Engineering, Kyoto University
    • 鉾井 修一 HOKOI Shuichi
    • 京都大学大学院工学研究科建築学専攻 Department of Architecture and Architectural Engineering, Graduate School of Engineering, Kyoto University
    • 高田 暁 TAKADA Satoru
    • 京都大学大学院工学研究科建築学専攻 Department of Architecture and Architectural Engineering, Graduate School of Engineering, Kyoto University

Abstract

本研究では,高温環境に滞在する人体のある部位のみを冷却した場合に,冷却部位によって生理応答がどのように異なるかを明らかにするため,人体熱モデルを用いた解析と被験者実験を行った.解析では,冷却部位を頭部,体幹部,四肢部と変え,各部位の等面積の皮膚から等しい熱量を除去した場合の,生理応答の違いを検討した.解析の結果,頭部を冷却した場合には,頭部core温が低下して発汗量が減少することによって全身からの放熱量が少なくなり,他部位を冷却した場合よりも平均皮膚温や平均体温が高くなった.このことから,同程度の冷却を行う場合には,頭部を冷却するよりも他の部位を冷却する方が,全身からの放熱量は多いという仮説を導いた.一方,低温空気を送風することによって足部または頭部を冷却した被験者実験において,この仮説を支持する生理応答が確認された.<br>

In this study, numerical analysis by using a thermoregulation model of the human body and subject experiment were carried out in order to examine the physiological response to partial cooling of the human body in a warm environment. Differences in physiological response were analyzed by comparing cooling of the head, trunk and extremities. In each case, heat loss was loaded for equal areas of skin. When the head was cooled, total heat loss from the whole body was less and mean skin temperature and mean body temperature were higher, than when the trunk or extremities were cooled. This was because of the decrease in thermal evaporation mainly caused by a decrease in head core temperature. From this analysis, it was assumed that greater heat loss is expected when cooling body parts other than the head, if the degree of cooling is equal. This hypothesis was supported by physiological responses observed in an experimental subject, whose feet or head were cooled by blowing cold air.<br>

Journal

  • JAPANESE JOURNAL OF BIOMETEOROLOGY

    JAPANESE JOURNAL OF BIOMETEOROLOGY 41(1), 19-30, 2004-08-01

    Japanese Society of Biometeorology

References:  14

Codes

  • NII Article ID (NAID)
    10026948890
  • NII NACSIS-CAT ID (NCID)
    AN00193590
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03891313
  • NDL Article ID
    7103424
  • NDL Source Classification
    ZS17(科学技術--医学--衛生学・公衆衛生)
  • NDL Call No.
    Z19-618
  • Data Source
    CJP  NDL  J-STAGE 
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