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European Journal of Applied Physiology
Published in: European Journal of Applied Physiology 1-2/2004

01-10-2004 | Original Article

Influence of mechanical and metabolic strain on the oxygen consumption slow component during forward pulled running

Authors: Patrick Avogadro, Heikki Kyröläinen, Alain Belli

Published in: European Journal of Applied Physiology | Issue 1-2/2004

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Abstract

The possible influence of increased eccentric mechanical work on the increase in oxygen uptake (V̇O2) after 3 min of running (ΔV̇O2) was investigated through forward pulled running. Ten subjects ran at individually predetermined constant velocity on a treadmill, while being pulled forward. Ground reaction forces, expired gas and EMGs from leg muscles were collected after 3 min and at the end of the run. V̇O2 and mechanical work were then calculated. The amplitude of ΔV̇O2 was 138 (139) ml·min−1 [mean (SD)]. Increased ventilation explained only 8% of ΔV̇O2. Stride frequency slightly decreased, inducing a similar decrease in internal work and total mechanical work (all P<0.01), while integrated EMG showed no modifications. It was concluded that ΔV̇O2 does not come from either an increase in mechanical work production or an increase in muscular activity. ΔV̇O2 could come from a lower muscle efficiency that could be due to a modification of fibre type recruitment.
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Metadata
Title
Influence of mechanical and metabolic strain on the oxygen consumption slow component during forward pulled running
Authors
Patrick Avogadro
Heikki Kyröläinen
Alain Belli
Publication date
01-10-2004
Publisher
Springer-Verlag
Published in
European Journal of Applied Physiology / Issue 1-2/2004
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-004-1200-8

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