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European Journal of Applied Physiology

Erschienen in:

01.10.2004 | Original Article

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

verfasst von: Patrick Avogadro, Heikki Kyröläinen, Alain Belli

Erschienen in: European Journal of Applied Physiology | Ausgabe 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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Titel: Influence of mechanical and metabolic strain on the oxygen consumption slow component during forward pulled running
verfasst von: Patrick Avogadro
Heikki Kyröläinen
Alain Belli
Publikationsdatum: 01.10.2004
Verlag: Springer-Verlag
Erschienen in: European Journal of Applied Physiology / Ausgabe 1-2/2004
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI: https://doi.org/10.1007/s00421-004-1200-8

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