A Portable Lightweight Douglas Bag Instrument for Use During Various Types of Exercise

G. de Groot; A. W. Schreurs; G. J. van Ingen Schenau

doi:10.1055/s-2008-1026027

International Journal of Sports Medicine, Table of Contents

Int J Sports Med 1983; 04(2): 132-134
DOI: 10.1055/s-2008-1026027

Technical Notes

A Portable Lightweight Douglas Bag Instrument for Use During Various Types of Exercise

G. de Groot, A. W. Schreurs, G. J. van Ingen Schenau

Work group Exercise Physiology and Health, Faculty of Medicine, University of Amsterdam and Interfaculty of Human Movement Studies, Free University, Amsterdam, The Netherlands

Abstract

A construction outline of lightweight portable equipment for V̇O₂ measurements by the Douglas bag method is given. The equipment consists of three separate units: an inspiration-expiration valve, a switch directing the expiratory flow, and a disconnectable bag with stopcock. The ease of operation assures good reproducibility of the results. Experiences during maximal speed skating are described. Use of the equipment demands only simple operations by the subject, which do not interfere with the exercise.

Key words

Douglas bag instrumentation - V̇O₂ measurements - V̇O₂ during skating

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