Optimal load for a torque-velocity relationship test during cycling
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ORIGINAL ARTICLE
Optimal load for a torque‑velocity relationship test during cycling Renata L. Krüger1 · Arthur Peyrard2 · Hervé di Domenico2 · Thomas Rupp2 · Guillaume Y. Millet1,3,4 · Pierre Samozino2 Received: 2 April 2020 / Accepted: 30 July 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Purpose Lower limbs’ neuromuscular force capabilities can only be determined during single sprints if the test provides a good fit of the data in the torque-velocity (T–V) and power-velocity (P–V) relationships. This study compared the goodness of fit of single sprints performed against traditional (7.5% of the body mass) vs. optimal load (calculated based on the force production capacity and ergometer specificities), and examined if reducing the load in fatigued state enhances T–V and P–V relationship goodness of fit. Methods Thirteen individuals performed sprints before (PRE) and after (POST) a fatiguing task against different loads: (1) TRAD: traditional, (2) OPT: optimal, and (3) LOW-OPT: optimal load reduced according to fatigue levels. Results At PRE, OPT sprints presented a higher R2 of the T–V relationship (0.92 ± 0.06) and lower time to reach maximal power (Pmax) (48 ± 9%) when compared with TRAD sprints (0.89 ± 0.06 and 66 ± 22%, respectively, p
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