EN ISO 8996:2021

Ergonomics of the thermal environment - Determination of metabolic rate (ISO 8996:2021)

Publication date:   Feb 17, 2022

General information

60.60 Standard published   Dec 22, 2021


CEN/TC 122 Ergonomics

European Norm

13.180   Ergonomics



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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.

Life cycle


EN ISO 8996:2004


EN ISO 8996:2021
60.60 Standard published
Dec 22, 2021