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高温高湿環境下での暑熱順化と脱順化が汗腺機能と皮膚血管拡張に及ぼす影響

高温高湿环境下热驯化和脱驯化对汗腺功能和皮肤血管舒张的影响

基本信息

批准号：
18F18793
负责人：
近藤徳彦
金额：
$ 0.7万
依托单位：
Kobe University
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2018
资助国家：
日本
起止时间：
2018-11-09 至 2020-03-31
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18F18793/
关键词：
暑熱順化高温・高湿度脱順化発汗効率高温高湿度季節順化

项目摘要

運動トレーニング者を対象（男子学生，10名程度）に，14日間の暑熱順化（最大酸素摂取量の50%～55％負荷の自転車運動を60分間，34°C・40％RHと34°C・80％RHの環境下で実施）と脱順化を行い，34℃・80％RHの環境下で最大酸素摂取量の50%～55％負荷の自転車運動を60分間実施し，順化の影響をみるため体温調節パラメータを測定した（被験者３名）．14日間の暑熱順化でいずれの環境条件でも安静時の体温低下，運動時の発汗量（全身発汗量も含む）・皮膚血流量の増加がみられた．両条件での違いとして発汗反応より皮膚血流反応に違いがみられる傾向にあった．また，運動時の体温上昇は高湿・環境での暑熱順化の方がいくらか小さくなった．一方，環境条件での違いによる脱順化の差異はみられなかった．2020年度も継続して順化実験を実施していく予定である．また，追加研究として，高温・高湿環境への季節順化と脱順化が発汗とその他の体温調節機能に及ぼす影響を検討した．12名の男子学生に対して，冬・夏・秋（秋は8名の被験者）に32℃・75％相対湿度の環境下で最大酸素摂取量の50％負荷の自転車運動を60分間実施し，体温・循環調節パラメータを測定した．夏への季節順化は冬と比較して局所・全身の発汗反応（体温に対する発汗反応）や汗の塩分濃度低下などの改善が認められ，これまでの報告通り，夏への季節順化が認められた．一方，高温・高湿環境下での汗の蒸発量（有効発汗量）には両季節で差がなく，無効発汗量（蒸発しない発汗量，運動中，フロアーに落ちる汗の量）は夏＞冬（有意な差）となり，汗が蒸発する効率（発汗効率）は夏＜冬（有意な差）となった．さらに，一定の水蒸気圧の環境が運動時の体温調節反応と運動パフォーマンスに及ぼす影響も検討し，運動時の環境条件として水蒸気圧の影響が重要であることが示された．

Physical exercise program for 10 students (male students, 10 students), 14-day summer heat in Hue (automatic bicycle exercise at 50% to 55% of the maximum acid intake, 60 minutes, 34°C・40%RH and 34°C・80%RH environment (Effect) and dehusification operation, the maximum acid extraction amount is 50% to 55% of the load under the environment of 34°C and 80% RH. Cycling exercise was carried out in 60 minutes, and the influence of Hue was measured on body temperature regulation (3 persons were affected). 14. During the day, the heat of Hue causes environmental conditions such as low body temperature at rest, increased sweating during exercise (the amount of sweat throughout the body), and an increase in skin blood flow.両Conditions: でのviolation, いとして発sweat reaction, skin blood flow reaction, にviolation, いがみられる tendency, にあった．また, the body temperature rises during exercise, the environment is high and the humidity is high, and the environment is hot and humid. On the one hand, the environmental conditions are different and the environmental conditions are different. The year 2020 is scheduled to be completed in Hue.また, additional research として, high temperature and high humidity environment への seasonal Hue と de-Hue が発 sweat とその other の thermoregulatory function に and ぼすを検 Discussion した. 12 male students were interviewed in winter, summer and autumn (8 students were interviewed in autumn) in an environment of 32℃・75% relative humidity The maximum amount of acid was taken during a 50% load autocycling exercise for 60 minutes, and the body temperature and circulation regulation test was measured. Summer is the season in Hue, winter is the comparison, the body temperature is the same as the whole body, and the body temperature is the same as the sweat reaction. The sub-concentration is low and the improvement is not recognized. On the one hand, the amount of sweat that is evaporated (the amount of effective sweat) in a high temperature and high humidity environment is due to the seasonal difference, and the amount of ineffective sweat (the amount of sweat that is evaporated during exercise)フロアーにfall the amount of sweat) はsummer>winter (intentional difference) となり, sweat がvaporization 発するefficiency (発 Khan efficiency) はsummer＜winter (intentional difference) となった.さらに, certain water vapor pressure and environment, body temperature regulation reaction during exercise, and exercise パフォーマンスに and ぼすThe influence of water vapor, pressure and environmental conditions during exercise is very important.