The purpose of this study was to look into the kinematics, kinetics and EMG of the single-legged running vertical jumps in different approach speed and distance. 12 basketball player performed single-legged running vertical jumps with 2 approach speed and 3 distance randomly. Kinematic and kinetic data were collected by a force and 11 infrared high speed cameras. EMG data were recorded by Dellsys surface EMG system. Two-way repeated measures ANOVA (2 speeds < 3 distance) was used for establishing differences (significance level p< .05). The jump height, joint moment of lower extremity, knee power and the activation of tibiali, anterior and gastrocnemius were found significantly larger in fast approach speed. We suggested using fast approach speed and 9m approach distance to enhance the single- legged running vertical jump ability.
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