Influence of dorsiflexion shoes on neuromuscular fatigue of the plantar flexors after combined tapping-jumping exercises in volleyball players.

摘要: Dorsiflexion shoes could be useful to increase jumping performance. The aim of the present study was investigate impact wearing inducing moderate dorsiflexion (2°) on neuromuscular fatigue induced by volleyball exercises involving multiple stretch-shortening cycles. Squat jump (SJ) and countermovement (CMJ) performance, plantar flexors isometric voluntary evoked contractile properties were assessed in 10 unfamiliarized trained players before after a 10-minute intensive combined tapping-jumping exercise performed, blinded randomized conditions, with neutral (0°) or (2°). No significant difference observed SJ performance conditions. However, CMJ height initially lower 2° compared 0° (p < 0.05). Height increased remained unchanged condition. Combined also decrease maximal contraction 0.001), peak-twitch torque = 0.009), time 0.001) twitch relaxation rate values without any between Voluntary activation level 0.014) force development 0.05) decreased both In conclusion, acute had no effect subjects altered elastic energy store plyometric condition (CMJ). Future studies are necessary chronic players.