ILO Home
Go to the home page
Site map | Contact us Franšais | Espa˝ol

CISDOC database

Document ID (ISN)78182
CIS number 02-459
ISSN - Serial title 1529-8663 - AIHA Journal
Year 2001
Convention or series no.
Author(s) Caretti D.M., Scott W.H., Johnson A.T., Coyne K.M., Koh F.
Title Work performance when breathing through different respirator exhalation resistances
Bibliographic information July-Aug. 2001, Vol.62, No.4, p.411-415. Illus. 15 ref.
Abstract An evaluation of the performance in workers, exercising at a fixed workload and wearing full-face piece respirators, and modified to provide different expiratory resistances. Fifteen volunteers exercised on a treadmill at fixed speeds and grades. Performance time decreased linearly with increased resistances. Average oxygen consumption rates and minute ventilation also decreased, indicating that increases in expiratory resistance result in hypoventilation. This study suggests that the only practical expiratory resistance level limitation is the reduction in performance that will be acceptable to the workers.
Descriptors (primary) exhalation; work capacity; hypoventilation; breathing resistance; oxygen consumption monitoring; respirators; respiratory minute volume
Descriptors (secondary) respiratory function tests
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Ergonomics and work organization
Broad subject area(s) Physiology, ergonomics
Browse category(ies) Respiratory protection
Diseases of the respiratory system (except for pneumoconiosis & similar)