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Peak power output predicts maximal oxygen uptake and performance time in trained cyclists

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Summary

The purposes of this study were firstly to determine the relationship between the peak power output (W peak) and maximal oxygen uptake (VO2max) attained during a laboratory cycling test to exhaustion, and secondly to assess the relationship betweenW peak and times in a 20-km cycling trial. One hundred trained cyclists (54 men, 46 women) participated in the first part of this investigation. Each cyclist performed a minimum of one maximal test during whichW max andVO2max were determined. For the second part of the study 19 cyclists completed a maximal test for the determination ofW peak, and also a 20-km cycling time trial. Highly significant relationships were obtained betweenW peak andVO2max (r=0.97,P<0.0001) and betweenW peak and 20-km cycle time (r= −0.91,P<0.001). Thus,W peak explained 94% of the variance in measuredVO2max and 82% of the variability in cycle time over 20 km. We concluded that for trained cyclists, theVO2max can be accurately predicted fromW peak, and thatW peak is a valid predictor of 20-km cycle time.

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Authors and Affiliations

  1. Liberty Life Chair of Exercise and Sports Science and the MRC/UCT Bioenergetics of Exercise Research Unit, Department of Physiology, University of Cape Town Medical School, Observatory, 7925, South Africa

    John A. Hawley & Timothy D. Noakes

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  1. John A. Hawley
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  2. Timothy D. Noakes
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Hawley, J.A., Noakes, T.D. Peak power output predicts maximal oxygen uptake and performance time in trained cyclists. Europ. J. Appl. Physiol. 65, 79–83 (1992). https://doi.org/10.1007/BF01466278

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