暑さ中のワーク・レスト・サイクルの間,冷たい飲み物を摂取した後の全身の熱交換に対するセックスの影響
Brodie J Richards1, Fergus K O'Connor1, Nicholas J Koetje1
1Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada.
American journal of industrial medicine
|August 29, 2025
まとめ
暑い環境での断続的な作業中にアイススラリーのような冷たい飲料を飲むことは,熱交換を助けるため,雄と雌の両方の累積的な熱貯蔵を大幅に減少させます. この発見は性別によって一致し,熱調節のための冷たい液体摂取の有効性を強調しています.
科学分野:
- 生理学
- 環境 健康
- スポーツ科学
背景:
- 作業中の熱ストレスにはリスクがあり,冷たい飲み物は熱調節を助ける可能性があります.
- 暑さでの運動中の熱交換の性別による差異は知られている.
- 女性の労働中の熱交換に対する冷たい飲み物の影響を調査することは極めて重要です.
研究 の 目的:
- 冷たい飲み物を摂取した後の全身の熱交換に影響があるかどうかを評価する.
- 熱中の断続的な作業中の熱貯蔵に対する氷のスラージと暖かい液体の効果を比較する.
- セックスが冷たい飲み物の 温度調節反応を抑制するかどうか
主な方法:
- 20人の若者 (10人の女性,10人の男性) が40°Cの暑さで断続的なサイクリングを行った.
- 参加者は休憩期間中に氷のスララ (~0°C) または暖かい液体 (37.5°C) を摂取した.
- 蓄積された熱を計算するために,直接的および間接的なカロリメトリーで熱交換と代謝熱生成を測定した.
主要な成果:
- 暖かい液体と比較して,メスとオスの両方に蓄積された熱を減少させた.
- 乾燥または蒸発による熱交換の有意な差異は,飲料条件または性別間で観察されなかった.
- 氷のスラージによる熱貯蔵の減少は有意であった (p=0. 01) が,性別によって差異はなかった (p=0. 70).
結論:
- 冷たい飲み物,特にアイススラリーは,乾燥した暑さでの断続的な作業中に蓄積された熱を効果的に減少させます.
- 全身の熱交換 (乾燥と蒸発) は,飲料の温度や性別によって有意に影響されなかった.
- 暑い環境での冷たい飲料の温度調節効果は,男性と女性の間で一貫しています.
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