Centre for Bioengineering, Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand.
Department of Exercise Science, Murphy Deming College of Health Sciences, Mary Baldwin University, Fishersville, Virginia, United States of America.
PLoS One. 2023 May 26;18(5):e0280658. doi: 10.1371/journal.pone.0280658. eCollection 2023.
Current convention place peak power as the main determinant of sprint cycling performance. This study challenges that notion and compares two common durations of sprint cycling performance with not only peak power, but power out to 20-min. There is also a belief where maximal efforts of longer durations will be detrimental to sprint cycling performance. 56 data sets from 27 cyclists (21 male, 6 female) provided maximal power for durations from 1-s to 20-min. Peak power values are compared to assess the strength of correlation (R2), and any relationship (slope) across every level. R2 between 15-s- 30-s power and durations from 1-s to 20-min remained high (R2 ≥ 0.83). Despite current assumptions around 1-s power, our data shows this relationship is stronger around competition durations, and 1-s power also still shared strong relationships with longer durations out to 20-min. Slopes for relationships at shorter durations were closer to a 1:1 relationship than longer durations, but closer to long-duration slopes than to a 1:1 line. The present analyses contradicts both well-accepted hypotheses that peak power is the main driver of sprint cycling performance and that maximal efforts of longer durations out to 20-min will hinder sprint cycling. This study shows the importance and potential of training durations from 1-s to 20-min over a preparation period to improve competition sprint cycling performance.
目前的惯例将峰值功率作为决定冲刺自行车运动表现的主要因素。本研究挑战了这一观点,并比较了两种常见的冲刺自行车运动表现持续时间,不仅包括峰值功率,还包括 20 分钟的输出功率。还有一种观点认为,较长时间的最大努力会对冲刺自行车运动表现产生不利影响。来自 27 名自行车运动员(21 名男性,6 名女性)的 56 个数据集提供了 1 秒至 20 分钟的最大功率。比较峰值功率值以评估相关性(R2)的强度,以及在每个水平上的任何关系(斜率)。15 秒至 30 秒的功率与 1 秒至 20 分钟的持续时间之间的 R2 仍然很高(R2≥0.83)。尽管目前对 1 秒功率的假设,但我们的数据表明,这种关系在比赛持续时间附近更强烈,1 秒功率与 20 分钟的更长持续时间之间也仍然存在很强的关系。较短持续时间的关系斜率更接近 1:1 关系,而不是更长的持续时间,但更接近长持续时间的斜率,而不是 1:1 线。本分析与两个被广泛接受的假设相矛盾,即峰值功率是冲刺自行车运动表现的主要驱动因素,以及 20 分钟内更长时间的最大努力会阻碍冲刺自行车运动。本研究表明,在准备期间,从 1 秒到 20 分钟的训练持续时间对于提高比赛冲刺自行车运动表现的重要性和潜力。