Assessment of Reliability in Isokinetic Testing Among Adolescent Basketball Players
Material and Methods. The sample included 27 basketball players who completed replicate test sessions of 5 repetitions of reciprocal concentric and eccentric knee extensions and flexions at 60º s–1. A randomly selected subsample of 8 players completed a third testing session to confirm reliability estimates.
Results. Coefficients of variation (CV) between sessions 1 and 2 ranged from 8.1% to 17.4%, and intraclass coefficients (ICCs) ranged from 0.72 to 0.89. For sessions 1 and 3, CVs ranged from 3.9% to 6.0%, and ICCs ranged from 0.95 to 0.99. The initial level of strength of eccentric knee flexion (r=–0.43) and eccentric knee extension (r=–0.42) were correlated (P<0.05) with eccentric knee extension within-variation between two sessions. Training experience (r=–0.37, P<0.05) and initial values of concentric knee flexion (r=–0.62, P<0.01) were correlated with concentric knee flexion within-subject differences. Within-subject variation of eccentric knee extension was correlated (P<0.05) with chronologic age (r=0.41), estimated age at peak height velocity (r=–0.38), body size (r=0.41 to 0.47), and leg volume (r=0.39).
Conclusions. Familiarization sessions may improve the reliability of concentric and eccentric knee isokinetic strength testing at 60º s–1 in adolescent basketball players. Age, maturity status, and training experience of young athletes should be considered when testing knee isokinetic strength at 60º s–1.
Carvalho, H.M.; Coelho E Silva, M.J.; Ronque, E.R.V.; Gonçalves, R.S.; Philippaerts, R.M.; Malina, R.M. Assessment of Reliability in Isokinetic Testing Among Adolescent Basketball Players. Medicina 2011, 47, 446.
Carvalho HM, Coelho E Silva MJ, Ronque ERV, Gonçalves RS, Philippaerts RM, Malina RM. Assessment of Reliability in Isokinetic Testing Among Adolescent Basketball Players. Medicina. 2011; 47(8):446.Chicago/Turabian Style
Carvalho, Humberto M.; Coelho E Silva, Manuel J.; Ronque, Enio R.V.; Gonçalves, Rui S.; Philippaerts, Renaat M.; Malina, Robert M. 2011. "Assessment of Reliability in Isokinetic Testing Among Adolescent Basketball Players." Medicina 47, no. 8: 446.