Titre
Reproducibility of the time to peak torque and the joint angle at peak torque on knee of young sportsmen on the isokinetic dynamometer.
Type
article
Institution
Externe
Auteur(s)
Bernard, P.L.
Auteure/Auteur
Amato, M.
Auteure/Auteur
Degache, F.
Auteure/Auteur
Edouard, P.
Auteure/Auteur
Ramdani, S.
Auteure/Auteur
Blain, H.
Auteure/Auteur
Calmels, P.
Auteure/Auteur
Codine, P.
Auteure/Auteur
Liens vers les personnes
ISSN
1877-0665
Statut éditorial
Publié
Date de publication
2012
Volume
55
Numéro
4
Première page
241
Dernière page/numéro d’article
251
Peer-reviewed
Oui
Langue
anglais
Résumé
BACKGROUND: Although peak torque has shown acceptable reproducibility, this may not be the case with two other often used parameters: time to peak torque (TPT) and the angle of peak torque (APT). Those two parameters should be used for the characterization of muscular adaptations in athletes.
METHODS: The isokinetic performance of the knee extensors and flexors in both limbs was measured in 29 male athletes. The experimental protocol consisted of three consecutive identical paradigms separated by 45 min breaks. Each test consisted of four maximal concentric efforts performed at 60 and 180°/s. Reproducibility was quantified by the standard error measurement (SEM), the coefficient of variation (CV) and by means of intra-class correlation coefficients (ICCs) with the calculation of 6 forms of ICCs.
RESULTS: Using ICC as the indicator of reproducibility, the correlations for TPT of both limbs showed a range of 0.51-0.65 in extension and 0.50-0.63 in flexion. For APT, the values were 0.46-0.60 and 0.51-0.81, respectively. In addition, the calculated standard error of measurement (SEM) and CV scores confirmed the low level of absolute reproducibility.
CONCLUSIONS: Due to their low reproducibility, neither TPT nor APT can serve as independent isokinetic parameters of knee flexor and extensor performance. So, given its reproducibility level, TPT and APT should not be used for the characterization of muscular adaptations in athletes.
METHODS: The isokinetic performance of the knee extensors and flexors in both limbs was measured in 29 male athletes. The experimental protocol consisted of three consecutive identical paradigms separated by 45 min breaks. Each test consisted of four maximal concentric efforts performed at 60 and 180°/s. Reproducibility was quantified by the standard error measurement (SEM), the coefficient of variation (CV) and by means of intra-class correlation coefficients (ICCs) with the calculation of 6 forms of ICCs.
RESULTS: Using ICC as the indicator of reproducibility, the correlations for TPT of both limbs showed a range of 0.51-0.65 in extension and 0.50-0.63 in flexion. For APT, the values were 0.46-0.60 and 0.51-0.81, respectively. In addition, the calculated standard error of measurement (SEM) and CV scores confirmed the low level of absolute reproducibility.
CONCLUSIONS: Due to their low reproducibility, neither TPT nor APT can serve as independent isokinetic parameters of knee flexor and extensor performance. So, given its reproducibility level, TPT and APT should not be used for the characterization of muscular adaptations in athletes.
PID Serval
serval:BIB_D07F1A5FA465
PMID
Open Access
Oui
Date de création
2012-02-20T12:08:21.934Z
Date de création dans IRIS
2025-05-21T01:56:56Z