在热环境下运载载荷时的女性能量消耗
J Luke Pryor1, Riana R Pryor1, Adam W Potter2
1Center for Research and Education in Special Environments, Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY.
Medicine and science in sports and exercise
|July 1, 2025
概括
负载运输决定援助 (LCDA) 准确地估计了不同热条件下的雌性能量消耗. 然而,在炎热,潮湿的环境中,可能会出现更高的能源成本.
科学领域:
- 运动生理学 运动生理学
- 环境生理学环境生理学
- 人类的表现人类的表现
背景情况:
- 货物运输决定援助 (LCDA) 是一个工具,旨在估计货物运输期间的能源支出.
- 在各种环境条件下验证LCDA的准确性对于其实际应用至关重要.
- 了解与货物运输相关的能源成本对于军事和职业环境至关重要.
研究的目的:
- 为了在健康的,军用年龄的女性中交叉验证载荷运输决定援助 (LCDA),对载荷运输天真.
- 评估LCDA在一系列热环境中估计氧气消耗 () 的准确性.
- 在不同的温度和湿度水平下确定LCDA估计的可靠性.
主要方法:
- 27名健康的女性 (18-35岁) 参与了7项实验试验.
- 参与者在受控的冷热环境 (10-45°C,20-60%的RH) 中,在带有或没有载荷的情况下,以增加速度行走.
- 使用间接热量计测量氧气消耗 (),并使用LCDA估计;分析差异偏差,一致性相关系数 (CCC) 和统计等效.
主要成果:
- 在凉爽和干燥的条件下,LCDA表现出极好的准确性 (例如,22°C,20%RH;Bias ± SD, -0.01 ± 0.33 W·kg-1;CCC = 0.992).
- 在大多数干燥环境中观察到可接受的精度,但在炎热,潮湿的条件下 (40°C,60%RH) 的性能是不可接受的.
- 在大多数环境中证实了统计学等价性,除了40°C,60%RH条件外.
结论:
- 负载运输决策辅助 (LCDA) 可以被女性可靠地使用,以估计在许多环境中带有和没有负载的行走能量支出.
- 在炎热和潮湿的条件下,用户应预计能源成本高于LCDA的预测.
- LCDA为估计能源消耗提供了一个有价值的工具,对极端热环境进行了具体考虑.
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