The Study of Details Effects in Cycling Aerodynamics: Comparison between Two Different Experimental Approaches.

Gibertini, G.; Campanardi, Donato Grassi Gabriele; Guercilena, Luca

doi:10.5772/21593

Cited by 2 publications

(1 citation statement)

References 19 publications

(26 reference statements)

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“…In terms of physiology, the effect of drafting can reduce the oxygen consumption, energy cost and perceived exertion. Aerodynamic effects have been usually taken into account only for "fast" sports, as downhill skiing [1,2], cross-country skiing [3,4], cycling [5,6]. Aerodynamic effects can be nonnegligible also at relatively low speed, when looking for maximum possible performance.…”

Section: Introductionmentioning

confidence: 99%

Wind Tunnel Test of Drafting at Endurance Run Velocity

Valsecchi¹,

Gibertini²,

Morelli³

2022

MMEP

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The aim of this study is to investigate and quantify the aerodynamics advantage, the physiological and performance advantage produced by pacemaker drafting in the case of long endurance running. The experimental tests have been carried out in a wind tunnel, at submaximal effort two runners done a treadmill run test of five minutes at 4.72 m/s with the same air velocity. By comparison of physiological parameters with and without drafting, the decreasing due to the pacemaker effect was obtained. A CFD simulation is used to analyze aerodynamic effects in terms of drag and drag coefficient with and without drafting at a wind speed of 4.72 m/s. Results indicates that compared to the baseline (running alone), the drafting position show a decrease in drag (-9.73%) and drag coefficient (-9.73%). This reduction in aerodynamic drag also leads to the reduction of the following physiological parameters, as detected by the experimental tests: oxygen consumption (-5.46%), metabolic power (-5.48%), energy cost (-7.31%), produced carbon dioxide (-7.40%), minute ventilation (-5.44%), HR (-0.60%), blood lactate concentration (-16.66%), RPE (-13.89%). Results demonstrate that drafting has a significant effect on aerodynamics parameters, but also on physiological and performance variables in highly and medium trained athletes.

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