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Reliability of Cycling Gross Efficiency Using the Douglas Bag Method

Hopker, James G., Jobson, Simon A., Gregson, Hannah C, Coleman, Damian A, Passfield, Louis (2012) Reliability of Cycling Gross Efficiency Using the Douglas Bag Method. Medicine and Science in Sports and Exercise, 44 (2). pp. 290-296. ISSN 0195-9131. (doi:10.1249/MSS.0b013e31822cb0d2)


Purpose: The aim of this study was to establish

percentage) using the Douglas bag method. Methods: The experiment was conducted in two parts. Part 1 examined the potential for

Part 2 of this study examined the within-subject day-to-day variability of GE in 10 trained male cyclists using the Douglas bag method.

results demonstrate that the reliability of gas sampling is high with a coefficient of variation (CV) G0.5% for both O2 and CO2. The

collecting large gas sample volumes. For part 2, a mean CV of 1.5% with limits of agreement of +0.6% in GE units, around a mean GE

and could be considered the gold-standard approach for evaluating changes in GE. Collecting larger expired gas samples minimizes

potential sources of error.

Item Type: Article
DOI/Identification number: 10.1249/MSS.0b013e31822cb0d2
Subjects: Q Science > QP Physiology (Living systems)
R Medicine > RC Internal medicine > RC1200 Sports medicine
Divisions: Faculties > Sciences > School of Sport and Exercise Sciences
Depositing User: Louis Passfield
Date Deposited: 24 Feb 2012 00:42 UTC
Last Modified: 28 Jan 2020 04:04 UTC
Resource URI: (The current URI for this page, for reference purposes)
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