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Development of biological monitoring methods of heat strain for preventing a heat stroke.

Research Project

Project/Area Number 15590567
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Public health/Health science
Research InstitutionUniversity of Occupational and Environmental Health

Principal Investigator

TSUTSUI Takao  University of Occupational and Environmental Health (UOEH), Institute of Industrial Ecological Sciences, Professor, 産業生態科学研究所, 助手 (60309987)

Co-Investigator(Kenkyū-buntansha) HONE Seichi  University of Occupational and Environmental Health (UOEH), Institute of Industrial Ecological Sciences, Professor, 産業生態科学研究所, 教授 (90341528)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2004: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2003: ¥1,500,000 (Direct Cost: ¥1,500,000)
Keywordsauditory canal temperature / core temperature / heat stroke / heat strain / monitoring system / thermal stress / ear canal temperature / aural canal temperature / 労働 / 連続測定
Research Abstract

We investigate the biological monitoring methods of heat strain for preventing a heat stroke among workers working in the hot environment. We choose an auditory canal to measure a core temperature. The auditory canal was insulated with an ear plug to reduce external climate effects. In the artificial climate chamber controlled at 25, 30, 35゜C and humidity 60%, six male volunteers were asked to perform three repeats of 20 min of 75 W exercise and 15 min rest on the bicycle ergometer. Auditory canal temperature was measured using an ear plug type thermo-sensor. Rectal temperature had a correlation with auditory canal temperature under stable environmental temperature condition. However, environmental temperature changes to hot or cold direction, auditory canal temperature also changes to hot or cold point depending on the environmental temperature. From 25゜C to 35゜C in environmental condition, the difference of rectal temperature and auditory canal temperature was within 0.6゜C. Then we measured the auditory canal temperature among workers using a mini thermo data logger. Twenty-seven workers in the four workshops wore the ear plug with thermo sensor connected to the mini data logger, worked in the hot environment. We also asked the questionnaire to the workers about heat sensation and tiredness by visual analog scale (VAS) before and after the job. Peak and mean value of the auditory canal temperature had correlation with sum of the heat sensation and tiredness VAS value. We think that the peak value of the auditory canal temperature shows the exposure limit of heat strain and the mean value of the auditory canal temperature shows the exposure dose of the heat strain. It is possible that the peak and mean value of the auditory canal temperature might be the effective indexes for preventing a heat stroke.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (10 results)

All 2005 2004 Other

All Journal Article (8 results) Publications (2 results)

  • [Journal Article] 暑熱環境下での下肢運動における下肢冷却服の体温上昇抑制効果2005

    • Author(s)
      筒井隆夫, 井戸田望, 永野千景 他
    • Journal Title

      産業医科大学雑誌 27

      Pages: 63-71

    • NAID

      110001844727

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 暑熱作業における送風式冷却服の効果2005

    • Author(s)
      川瀬洋平, 藤井ロナウド, 永野千景 他
    • Journal Title

      産業衛生学雑誌 47(臨時増刊)

      Pages: 521-521

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 暑熱作業者の間歇的な水かぶりの身体冷却効果2005

    • Author(s)
      藤井ロナウド, 筒井隆夫, 永野千景 他
    • Journal Title

      産業衛生学雑誌 47(臨時増刊)

      Pages: 525-525

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Body cooling capacity of water circulated cooling pants during lower body exercise in a hot environment2005

    • Author(s)
      Takao Tsutsui
    • Journal Title

      J UOEH 27(1)

      Pages: 63-71

    • NAID

      110001844727

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 耳栓で遮蔽された外耳道温の実験的検討2004

    • Author(s)
      筒井隆夫, 井戸田望, 堀江正知 他
    • Journal Title

      産業衛生学雑誌 46(臨時増刊)

      Pages: 306-306

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 暑熱環境下での繰り返し運動負荷における外耳道温、食道温、直腸温の比較2004

    • Author(s)
      筒井隆夫
    • Journal Title

      産業医科大学雑誌 26

      Pages: 149-149

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 耳栓で遮蔽された外耳道温の労働現場への応用2004

    • Author(s)
      井戸田望, 筒井隆夫, 堀江正知 他
    • Journal Title

      産業衛生学雑誌 46(臨時増刊)

      Pages: 306-306

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 耳栓で遮断された外耳道温の実験的検討2004

    • Author(s)
      筒井隆夫, 井戸田望, 堀江正知他
    • Journal Title

      産業衛生学雑誌 46巻・臨時増刊号

      Pages: 306-306

    • Related Report
      2004 Annual Research Report
  • [Publications] 筒井隆夫: "暑熱環境下でのエルゴメータによる繰り返し運動負荷における下肢用冷却服の効果"産業衛生学雑誌 第45巻臨時増刊号. 45巻. 545 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 筒井隆夫: "暑熱環境下での繰り返し運動負荷における外耳道温、食道温、直腸温の比較"産業医科大学雑誌. 26巻1号. 149 (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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