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ISO 16976-4:2023

Respiratory protective devices — Human factors — Part 4: Work of breathing and breathing resistance: physiologically based limits

Publication date:   Feb 7, 2023

General information

60.60 Standard published   Feb 7, 2023

ISO

ISO/TC 94/SC 15 Respiratory protective devices

International Standard

13.340.30   Respiratory protective devices

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Scope

This document describes how to calculate the work performed by a person’s respiratory muscles with and without the external respiratory impediments that are imposed by RPD of all kinds, except diving equipment. This document describes how much additional impediment people can tolerate and contains values that can be used to judge the acceptability of an RPD.
NOTE       These calculations are explained in some textbooks on respiratory physiology (in the absence of an RPD), but most omit them or are incomplete in their explanations.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO/TS 16976-4:2019

NOW

PUBLISHED
ISO 16976-4:2023
60.60 Standard published
Feb 7, 2023