Shortening of amortisation phase in front support phase, initiation of drive in rearsupport phase without a transitional period and with as short a ground contract time as possible.

• 骨骼肌收缩的速度主要取决于它肌肉纤维的结构。肌肉中，快速收缩纤维的比例与运动的最大速度密切相关。