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从ISO心率方法和两个行走方程中估计新陈代谢率

Thomas E Bernard¹, Karl E Williams¹, Candi D Ashley²

¹College of Public Health, University of South Florida, USA.

Industrial health

|April 3, 2024

概括

这项研究比较了在热应激期间估计代谢率的方法. ISO心率方法的精度低于ACSM和LCDA方程,但更广泛地适用.

科学领域:

职业健康和安全职业健康和安全
人类生理学人类生理学
环境压力评估环境压力评估

背景情况:

准确的代谢率估计对于热应激评估至关重要.
现有的方法包括ISO 8996标准 (ACSM和心率方法) 和美国陆军的载荷承载决策辅助 (LCDA).

研究的目的:

评估ISO心率方法与ACSM和LCDA代谢率预测方程相比的准确性和精度.
为职业环境中热应激评估提供最佳实践信息.

主要方法:

使用实验室数据库从一个渐进式热应力协议.
测量了新陈代谢率,心率,跑步机速度和等级.
使用布兰德-阿尔特曼图表和根平均平方误差 (RMSE) 评估准确度和精度.

主要成果:

这三种方法都表现出很好的准确性和低偏差.
与ACSM和LCDA方程 (20W,7%) 相比,ISO心率方法在精度方面具有更高的RMSE (34W,11%).
尽管心率方法的精度较低,但它提供了更大的通用性.

结论:

国际标准化心率方法不那么精确,但在热应激评估中更广泛地适用于代谢率估计.
建议使用低于职业暴露限值的心率方法来减轻热应变的偏差.
进一步的研究可能会为各种职业场景改进预测模型.

关键词:

能源支出能源支出热应激是一种热应激.吸收氧气的时间预测的代谢速度

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