Abstract
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 (P max) was studied in 21 healthy subjects by studying the relationships between maximal cycling power related to body mass (P max BM−1) with T MVC, MRTD and different indices of musculo-tendinous stiffness of the ankle flexor. P max 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. P max BM−1 was significantly and positively correlated with MRTD related to body mass but the positive correlation between P max BM−1 and T MVC did not reach the significance level (0.05). P max BM−1 was significantly and positively correlated with the estimation of stiffness at 40% T MVC (S0.4), 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 (r 2 = 0.203) between P max BM−1 and S 0.4 BM−1 suggested that P max BM−1 largely depended on other factors than the musculo-tendinous stiffness of the only plantar flexors.
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Communicated by Jean-René Lacour.
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Driss, T., Lambertz, D., Rouis, M. et al. Influence of musculo-tendinous stiffness of the plantar ankle flexor muscles upon maximal power output on a cycle ergometre. Eur J Appl Physiol 112, 3721–3728 (2012). https://doi.org/10.1007/s00421-012-2353-5
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DOI: https://doi.org/10.1007/s00421-012-2353-5