Allometric scaling of uphill cycling performance

International Journal of Sports Medicine
S A JobsonA M Nevill

Abstract

Previous laboratory-based investigations have identified optimal body mass scaling exponents in the range 0.79-0.91 for uphill cycling. The purpose of this investigation was to evaluate whether or not these exponents are also valid in a field setting. A proportional allometric model was used to predict the optimal power-to-mass ratios associated with road-based uphill time-trial cycling performance. The optimal power function models predicting mean cycle speed during a 5.3 km, 5.4% road hill-climb time-trial were (VO(2max) x m(-1.24))(0.55) and (RMP(max) x m(-1.04))(0.54), explained variance being 84.6% and 70.5%, respectively. Slightly higher mass exponents were observed when the mass predictor was replaced with the combined mass of cyclist and equipment (m(C)). Uphill cycling speed was proportional to (VO(2max) x m(C)(-1.33))(0.57) and (RMP(max) x m(C)(-1.10))(0.59). The curvilinear exponents, 0.54-0.59, identified a relatively strong curvilinear relationship between cycling speed and energy cost, suggesting that air resistance remains influential when cycling up a gradient of 5.4%. These results provide some support for previously reported uphill cycling mass exponents derived in laboratories. However, the exponents reported...Continue Reading

Citations

Apr 12, 2011·European Journal of Applied Physiology·Alfred NimmerichterCraig Williams
Nov 23, 2012·Journal of Sports Sciences·Tomas CarlssonMichail Tonkonogi
Jul 9, 2013·Journal of Sports Sciences·Tomas CarlssonMichail Tonkonogi
Aug 21, 2014·European Journal of Applied Physiology·Magnus CarlssonMichail Tonkonogi
Feb 3, 2009·Journal of Sports Sciences·Simon A JobsonGreg Atkinson
Sep 28, 2014·European Journal of Applied Physiology·B KarstenC Beedie
Feb 20, 2021·International Journal of Sports Physiology and Performance·Peter LeoJustin S Lawley

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