Critical power of knee extension exercises does not depend upon maximal strength

Jean-Michel Le Chevalier; Henry Vandewalle; Chantalle Thépaut-Mathieu; M. Pujo; B. Le Natur; Jean-François Stein

Critical power of knee extension exercises does not depend upon maximal strength

Jean-Michel Le Chevalier ¹ Henry Vandewalle ¹ Chantalle Thépaut-Mathieu ¹ M. Pujo ¹ B. Le Natur ¹ Jean-François Stein ¹

1 INSEP - Institut national du sport et de l'éducation physique

Abstract : A possible dependence of critical power (CP) and the Y-intercept of the work/exhaustion time relationship (Yintcrccpt) on maximal muscular strength of the same muscle group has been studied in nine endurance-trained subjects. seven gymnasts. and seven weight-lift-ers. CP was calculated as being equal to the slope of the linear rel a tionship between exhaustion ti me and the work performed at exhaustion on a knee extension er-gometer. Yinterccpt was equal to the intercept between this relationship and the work axis. The muscular strength of the knee was evaluated by measuring the torques exerted on a Biodex knee isokinetic dynamometer at four angular velocities: 0° · s-1 (T 0). 90° · Ç 1 (T 90). usoo · s-1 (T1xol and 240° · s-1 (T 240). The results of the present study do not support the hypothesis that CP depends upon maximal strength. Indeed. CP was not correlated with To. T 90· T 1 xo or T 240 (r < 0.01). Yintcrccpt was significantly and positively correlated only with T 90 .

Keywords : Critical power · Strength · Endurance · Quadriceps · Isokinetic testing

Type de document :

Article dans une revue

Domaine :

Sciences de l'Homme et Société / Sport

Sciences de l'Homme et Société / Sport / Physiologie du sport

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https://hal-insep.archives-ouvertes.fr/hal-01758839
Contributeur : Documentation Insep <>
Soumis le : mercredi 4 avril 2018 - 18:34:49
Dernière modification le : jeudi 5 avril 2018 - 01:27:50

Critical power of knee extension exercises does not depend upon maximal strength

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