在炎热的城市山地徒步旅行中,能源消耗和生理标志物:一个案例研究
Floris C Wardenaar1, Daan Hoogervorst2, Barbara E Ainsworth3
1College of Health Solutions, Arizona State University, Phoenix, USA.
Nutrition and health
|April 27, 2024
概括
准确测量徒步旅行的能源消耗是一项挑战. 通过心肺运动测试 (CPET) 进行的直接测量显示了上坡和下坡徒步旅行之间的显著差异,与基于公式的不太精确估计不同.
科学领域:
- 运动生理学 运动生理学
- 人类表现的人类表现.
- 生物技术是生物技术.
背景情况:
- 在艰苦的体力活动中评估能量消耗,例如徒步旅行在困难的小径上,这会带来重大挑战.
- 准确的测量对于理解生理需求和优化性能至关重要.
研究的目的:
- 在徒步旅行期间使用移动心肺运动测试 (CPET) 直接测量体力活动运动能量消耗 (PAEE).
- 将CPET的PAEE测量与来自心率 (HR) 和身体活动汇编的估计进行比较.
- 评估不同方法的准确性,以反映挑战性登期间的实际能源支出.
主要方法:
- 使用移动CPET设备直接测量PAEE,以评估氧气吸收.
- 还使用基于心率 (HR) 和代谢等效 (MET) 值的公式估计了PAEE,这些值来自体力活动汇编.
- 监测了包括流体消耗,体重减轻,皮肤和核心体温在内的生理结果.
主要成果:
- 在124分钟的徒步旅行中,CPET显示在上升 (887千卡) 和下降 (455千卡) 阶段之间的PAEE差异是两倍的,总计1342千卡.
- 基于HR的估计显著过度报告PAEE551千卡 (总计1893千卡).
- 基于汇编的估计范围从1179到1446千卡,显示与CPET数据更接近,尽管仍有变化.
结论:
- 使用CPET进行直接测量,可以比HR或基于Compendium的估计更准确地评估徒步旅行期间的能源消耗.
- 虽然表格提供了合理的预测,但它们不能准确地捕捉到各种徒步旅行地形的动态能源需求.
- 了解这些差异对于准确的户外活动生理监测至关重要.
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