Abstract

ACQUESTA, Fernanda M. et al. Dynamical characteristics of basketball specific movements . Rev. Port. Cien. Desp. [online]. 2007, vol.7, n.2, pp.174-182. ISSN 1645-0523.

The purpose of this study was to evaluate dynamical parameters of the ground reaction force (GRF) in specific basketball movements performed by Brazilian professional players. It was also aimed to determine correlations between jump performance and its impact shock during landings. Eight athletes performed 5 trials in each movement: jump shot, jump and reach, layup, rebound and dribble at two different speeds (control: v=4m/s and speed: v=6m/s). Dynamical parameters of GRF were sampled by a force platform (KISTLER AG 9287). Results of the first peak of vertical force in landing, peak rise time and impulse were, respectively: in jump shot 4.54 ± 1.10 BW, 0.08 ± 0.01s, and 0.13 ± 0.04 BW.s; in rebound 5.39 ± 1.26 BW, 0.07 ± 0.01s, and 0.18 ± 0.04 BW.s; and in layup 7.27 ± 2.71 BW, 0.08 ± 0.13 s, and 0.24 ± 0.04 BW.s. These results showed that the player´s body is submitted to a relatively high impact shock during basketball movements. The low correlations between jump high and the first peak of vertical force (r=0.44 in jump shot, r=0.22 in rebound, and r=0.34 in layup) demonstrated that jump performance did not have a relevant influence on impact shock during landings.

Keywords : biomechanics; basketball; ground reaction force; load; performance.

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