Guideline preparations of heatstroke prevention for "Sports spectators"

• Project/Area Number: 16K13034
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Applied health science
• Research Institution: Shujitsu University
• Principal Investigator: Iida Tomoyuki 就実大学, 教育学部, 准教授 (70509645)
• Co-Investigator(Kenkyū-buntansha): 関 和俊 流通科学大学, 人間社会学部, 准教授 (30552210) ; 高木 祐介 奈良教育大学, 保健体育講座, 准教授 (70707702) ; 家光 素行 立命館大学, スポーツ健康科学部, 教授 (90375460)
• Research Collaborator: Nishimura Kazuki ; Miyasaka Yugo
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
• Keywords: 熱中症予防 / 観戦者 / スポーツ観戦 / 水分摂取量 / 体重減少量 / 尿中電解質 / スポーツ観戦者

Outline of Final Research Achievements

The aim of this study was to investigate the influence of the thermal stress at "sports spectators" in the heat environment.As a result, we confirmed the following. ①Spectators have low recognize to danger of heat stroke, ②Spectators lacked water intake that depend on thirst rating, ③The electrolyte of spectators may be insufficiency if drink barley tea only, ④The sweating response in the heat environment is affected by daily exposing weather and environment, ⑤Men are lower water intake and higher dehydration rates compared with women.
From these results, it's clarified sport event spectators in heat environment could suffer heat stroke even if they do not play sports and watch sports while sitting.

Academic Significance and Societal Importance of the Research Achievements

本研究結果の意義は、熱中症予防に関する科学的根拠を「スポーツ観戦者」に着目して示した点にある。さらに、本研究の成果は、スポーツイベントの観戦者に留まらず、体育授業見学者や運動会の観戦者（教育面）、そして2020年の東京五輪観戦者（社会面）に向けての熱中症予防の有益な知見になり、発展的要素も多分に含まれている。

Research Products

• [Journal Article] 夏季暑熱環境下の野球観戦時における水分摂取量、発汗量および体重変化ーミネラルウォーターを飲料水とした場合の実戦的調査ー (2017)
  • Author(s): 高木祐介、飯田智行、関和俊、宮坂雄悟、西村一樹
  • Journal Title: 保健の科学 Volume: 59 Pages: 641-645
  • Peer Reviewed
• [Presentation] The influence of intake the differences drinks on urinary electrolyte in the spectators under a hot environment (2019)
  • Author(s): T.Iida, K.Seki, Y.Takagi, K.Nishimura, Y.Miyasaka
  • Organizer: European College of Sports Science 2019
  • Int'l Joint Research
• [Presentation] A study on the prevention of heat stroke at sport spectators under heat environment (2018)
  • Author(s): T.Iida, K.Seki, Y.Takagi, K.Nishimura, Y.Miyasaka
  • Organizer: European College of Sports Science 2018
  • Int'l Joint Research
• [Presentation] 暑熱環境シミュレーションにおける高校野球観戦時の水分摂取量および体重変化 -夏季および冬季からの検討- (2018)
  • Author(s): 飯田智行，関和俊，高木祐介，宮坂雄悟，家光素行，内田昌孝，西村一樹
  • Organizer: 第75回日本体力医学会大会
• [Presentation] A study of amount Water intake of spectators at summer high school baseball game in Japan (2017)
  • Author(s): T.iida, K.Seki, Y.Takagi, K.Nishimura, Y.Miyasaka
  • Organizer: European College of Sports Science 2017
  • Int'l Joint Research
• [Presentation] 暑熱環境下における野球観戦者の水分摂取量の実態～性差に着目して～ (2016)
  • Author(s): 飯田智行、関和俊、高木祐介、西村一樹、宮坂雄悟
  • Organizer: 第78回日本体力医学会中国四国地方会
  • Place of Presentation: 山口大学
  • Year and Date: 2016-11-19
• [Presentation] The current state of the water intake of spectators at a high school baseball in Japan (2016)
  • Author(s): T.Iida, K.Seki, Y.Takagi, K.Nishimura, Y.Miyasaka
  • Organizer: 21st annual Congress of the European College of Sports Science
  • Place of Presentation: Austria Center Vienna（オーストリア）
  • Year and Date: 2016-07-06