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

© Georg Thieme Verlag Stuttgart · New York

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
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Publication History

Publication Date:
14 March 2008 (online)

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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