CeRSM, E.A. 2931, Equipe de Physiologie et de Biomécanique du Mouvement, UFR STAPS, Université Paris Ouest Nanterre-La Défense, 200 avenue de la république, 92000, Nanterre, France.
Eur J Appl Physiol. 2012 Nov;112(11):3721-8. doi: 10.1007/s00421-012-2353-5. Epub 2012 Feb 22.
The importance of maximal voluntary torque (T (MVC)), maximal rate of torque development (MRTD) and musculo-tendinous stiffness of the triceps surae for maximal power output on a cycle ergometre (Pmax) was studied in 21 healthy subjects by studying the relationships between maximal cycling power related to body mass (Pmax BM(-1)) with T (MVC), MRTD and different indices of musculo-tendinous stiffness of the ankle flexor. Pmax BM(-1) was calculated from the data of an all-out force-velocity test on a Monark cycle ergometre. T (MVC) and MRTD were measured on a specific ankle ergometre. Musculo-tendinous stiffness was estimated by means of quick releases at 20, 40, 60 and 80% T (MVC) on the same ankle ergometre. Pmax BM(-1) was significantly and positively correlated with MRTD related to body mass but the positive correlation between Pmax BM(-1) and T (MVC) did not reach the significance level (0.05). Pmax BM(-1) was significantly and positively correlated with the estimation of stiffness at 40% T (MVC) (S(0.4)), but not with stiffness at 20, 60 and 80% T (MVC). The results of the present study suggest that maximal power output during cycling is significantly correlated with the level of musculo-tendinous stiffness which corresponds to torque range around peak torque at optimal pedal rate. However, the low coefficient of determination (r2 = 0.203) between Pmax BM(-1) and S (0.4) BM(-1) suggested that Pmax BM(-1) largely depended on other factors than the musculo-tendinous stiffness of the only plantar flexors.
在 21 名健康受试者中，通过研究与身体质量相关的最大循环功率（Pmax BM(-1)）与 T (MVC)、MRTD 和踝关节屈肌不同的肌腱刚度指数之间的关系，研究了最大自愿扭矩 (T (MVC))、最大扭矩发展速率 (MRTD) 和三头肌肌腱紧张度对最大功率输出在循环测功仪（Pmax）的重要性。Pmax BM(-1) 是从 Monark 测功仪上的全力速度测试数据计算得出的。T (MVC) 和 MRTD 是在特定的踝关节测功仪上测量的。肌腱紧张度是通过在同一踝关节测功仪上以 20%、40%、60%和 80% T (MVC) 的快速释放来估计的。Pmax BM(-1) 与与身体质量相关的 MRTD 呈显著正相关，但 Pmax BM(-1) 与 T (MVC) 之间的正相关关系未达到显著水平（0.05）。Pmax BM(-1) 与 40% T (MVC) 时的刚度估计（S(0.4)）呈显著正相关，但与 20%、60%和 80% T (MVC) 时的刚度无关。本研究结果表明，在自行车上进行的最大功率输出与肌肉肌腱紧张度水平显著相关，肌肉肌腱紧张度水平对应于最佳踏板速度时的峰值扭矩范围内的扭矩。然而，Pmax BM(-1) 和 S (0.4) BM(-1) 之间的决定系数（r2 = 0.203）较低，表明 Pmax BM(-1) 在很大程度上取决于除跖屈肌的肌腱紧张度之外的其他因素。
