在不同环境温度的增量运动中,汗水和血中乳酸盐度反应的不同模式:试点研究
Naoya Takei1,2, Takeru Inaba2, Yuki Morita2
1Research Institute of Physical Fitness, Japan Women's College of Physical Education, Tokyo, Japan.
Temperature (Austin, Tex.)
|August 28, 2024
概括
汗液中的乳酸度不能可靠地表明运动期间血液中的乳酸度,尤其是在炎热的条件下. 这一发现影响了可穿戴传感器用于监测运动表现和生理反应的使用.
科学领域:
- 运动生理学 运动生理学
- 生物化学 生物化学
- 可穿戴技术可穿戴技术
背景情况:
- 血中乳酸度是能量代谢和运动期间耐力表现的关键指标.
- 通过可穿戴传感器测量汗液乳酸,为血液乳酸监测提供了一个非侵入性的替代方案.
- 有限的数据存在于汗水和血液乳酸盐之间的相关性在热环境中的增量运动期间.
研究的目的:
- 在正常和炎热条件下的增量运动期间,研究汗水和血液乳酸盐度之间的关系.
- 为了确定汗水乳酸值 (LT) 是否与血液乳酸值 (LT) 在不同的热环境中保持一致.
- 评估可穿戴汗液传感器在运动期间估计血液乳酸反应的可靠性.
主要方法:
- 六名训练有素的男性跑步者在正常 (20°C/50%RH) 和热 (30°C/50%RH) 条件下进行随机交叉增量跑步机测试.
- 在每个运动阶段测量血液和汗水中的乳酸度,以确定乳酸值.
- 运动包括3分钟的跑步阶段,速度增加1公里/小时,恢复时间为1分钟.
主要成果:
- 在炎热的条件下,血液中的乳酸盐度更高,但血液中的乳酸盐值速度保持一致.
- 在炎热的条件下,汗液中的乳酸盐较早增加,速度较慢.
- 在正常条件下观察到血液和汗水乳酸之间的显著相关性,但在炎热条件下没有.
结论:
- 汗水中的乳酸度并不总是反映在增加的运动期间的血中的乳酸度,特别是在炎热的环境中.
- 该研究不支持将汗液乳酸作为在高温运动期间血液乳酸反应的唯一指标的使用.
- 需要进一步的研究,以了解在不同环境条件下运动期间温度调节,水分和乳酸动力学之间的复杂相互作用.
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