本文件规定了在热工作环境的人类工效学背景下测定代谢率的不同方法。它还可用于其他应用，例如工作实践评估、特定工作或体育活动的能量成本以及活动的总能量成本。这些方法分为四个级别，精确度越来越高:1级，筛查，表格给出了低、中、高代谢率活动的示例；2级，观察，通过时间和运动研究估计代谢率；3级，分析，根据心率记录或加速计测量估计代谢率；第四级，专业技能，其中描述了更复杂的技术。 文中给出了这些方法的实施步骤，并对不确定性进行了讨论。

This document specifies different methods for the determination of metabolic rate in the context of ergonomics of the thermal working environment. It can also be used for other applications, e.g. the assessment of working practices, the energetic cost of specific jobs or sport activities and the total energy cost of an activity. The methods are classified in four levels of increasing accuracy: level 1, Screening, with a table giving examples of activities with low, moderate and high metabolic rates; level 2, Observation, where the metabolic rate is estimated by a time and motion study; level 3, Analysis, where the metabolic rate is estimated from heart rate recordings or accelerometers measurements; and level 4, Expertise, where more sophisticated techniques are described. The procedure to put into practice these methods is presented and the uncertainties are discussed.