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Power output and work in different muscle groups during ergometer cycling.
KTH, School of Technology and Health (STH), Ergonomics. (Ergonomi)
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1986 (English)In: European Journal of Applied Physiology and Occupational Physiology, ISSN 0301-5548, E-ISSN 1432-1025, Vol. 55, no 3, 229-35 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this study was to calculate the magnitude of the instantaneous muscular power output at the hip, knee and ankle joints during ergometer cycling. Six healthy subjects pedalled a weight-braked bicycle ergometer at 120 watts (W) and 60 revolutions per minute (rpm). The subjects were filmed with a cine camera, and pedal reaction forces were recorded from a force transducer mounted in the pedal. The muscular work at the hip, knee and ankle joint was calculated using a model based upon dynamic mechanics described elsewhere. The mean peak concentric power output was, for the hip extensors, 74.4 W, hip flexors, 18.0 W, knee extensors, 110.1 W, knee flexors, 30.0 W and ankle plantar flexors, 59.4 W. At the ankle joint, energy absorption through eccentric plantar flexor action was observed, with a mean peak power of 11.4 W and negative work of 3.4 J for each limb and complete pedal revolution. The energy production relationships between the different major muscle groups were computed and the contributions to the total positive work were: hip extensors, 27%; hip flexors, 4%; knee extensors, 39%; knee flexors, 10%; and ankle plantar flexors 20%.

Place, publisher, year, edition, pages
1986. Vol. 55, no 3, 229-35 p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:kth:diva-77586PubMedID: 3732250OAI: diva2:498415
NR 20140805Available from: 2012-02-12 Created: 2012-02-07 Last updated: 2012-02-12Bibliographically approved

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