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Purpose <p><?tk 4?>The purpose of this study was to investigate the contribution of aerobic and anaerobic energy release on cycling performance in 10 to 180&#xa0;s.</p> Methods <p><?tk 4?>18 male cyclists from recreational- to elite level participated in this cross-sectional study. The cyclists were tested in oxygen cost of cycling (C), peak oxygen uptake (VO<sub>2peak</sub>), maximal sprint power (MSP), and five short time trials (TT): 10&#xa0;s (10TT), 30&#xa0;s (30TT), 60&#xa0;s (60TT), 120&#xa0;s (120TT) and 180&#xa0;s (180TT). In all time trials, VO<sub>2</sub>, maximal accumulated oxygen deficit (MAOD) and blood lactate concentration ([La<sup>−</sup>]<sub>b</sub>) were measured.</p> Results <p><?tk 4?>On average, there was a 50–50% distribution of anaerobic and aerobic energy release at 73&#xa0;s and at 180TT the distribution was 71% aerobic and 29% anaerobic. When performance was expressed in absolute watt values, strong correlations were found between 180TT and MSP (<i>r</i> = 0.85, <i>p</i> &lt; 0.01, 95% CI [0.55, 0.93]), maximal aerobic power (MAP) (<i>r</i> = 0.88, <i>p</i> &lt; 0.01, 95% CI [0.69, 0.95]), MAOD expressed as mL· kg<sup>− 1</sup> (<i>r</i> = 0.81, <i>p</i> &lt; 0.01, 95% CI [0.56, 0.93]) and 0.7MAP + 0.3MSP (<i>r</i> = 0.91, <i>p</i> &lt; 0.01, 95% CI [0.77, 0.97]). MAOD measured in 180TT correlated significantly with MAOD in all the other TTs, i.e., those with the highest MAOD already at 10&#xa0;s, also had the highest MAOD at 180s. Furthermore, MAOD increased rapidly between 10 and 60&#xa0;s, but leveled off between 120 and 180&#xa0;s. This suggests an individual maximal volume of anaerobic work that needs to be distributed across a given cycling duration.</p>

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Physiological determinants and energy system contribution in short- and middle-distance cycling performance

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月19日

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  • Lars Erik Gjerløw,
  • Eva Maria Støa,
  • Jan Helgerud,
  • Jan-Michael Johansen,
  • Øyvind Støren

摘要

Purpose

The purpose of this study was to investigate the contribution of aerobic and anaerobic energy release on cycling performance in 10 to 180 s.

Methods

18 male cyclists from recreational- to elite level participated in this cross-sectional study. The cyclists were tested in oxygen cost of cycling (C), peak oxygen uptake (VO2peak), maximal sprint power (MSP), and five short time trials (TT): 10 s (10TT), 30 s (30TT), 60 s (60TT), 120 s (120TT) and 180 s (180TT). In all time trials, VO2, maximal accumulated oxygen deficit (MAOD) and blood lactate concentration ([La−]b) were measured.

Results

On average, there was a 50–50% distribution of anaerobic and aerobic energy release at 73 s and at 180TT the distribution was 71% aerobic and 29% anaerobic. When performance was expressed in absolute watt values, strong correlations were found between 180TT and MSP (r = 0.85, p < 0.01, 95% CI [0.55, 0.93]), maximal aerobic power (MAP) (r = 0.88, p < 0.01, 95% CI [0.69, 0.95]), MAOD expressed as mL· kg− 1 (r = 0.81, p < 0.01, 95% CI [0.56, 0.93]) and 0.7MAP + 0.3MSP (r = 0.91, p < 0.01, 95% CI [0.77, 0.97]). MAOD measured in 180TT correlated significantly with MAOD in all the other TTs, i.e., those with the highest MAOD already at 10 s, also had the highest MAOD at 180s. Furthermore, MAOD increased rapidly between 10 and 60 s, but leveled off between 120 and 180 s. This suggests an individual maximal volume of anaerobic work that needs to be distributed across a given cycling duration.