人体在短跑运动中,虽然是在骨盆的转动协调作用下,由双腿相向快速摆动与交替着地支撑而实现的步长与步频,但是要合理快速完成这些技术动作,还需躯干和摆臂技术的协同作用。虽然人在适应自然过程中,身体各个环节的肌肉绝对力量大小存在着差距,但是要保证身体的各个环节运动速度达到同步性和人体运动的平稳性,这 The body in the sprint exercise, although the coordination of the pelvic rotation, by the legs swinging fast and alternating with the ground to support the pace and pace, but to achieve reasonable and rapid completion of these technical actions, but also the trunk and swing arm Synergy of technology. Although people adapt to the natural process, the absolute strength of the muscles in all aspects of the body there is a gap between the size, but to ensure that all aspects of the body movement speed to achieve synchronization and human motion stability, which