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】通过对１００ｍ途中跑支撑时摆动腿摆动和骨盆转动技术的分析，得出：支撑摆动包括：支撑腿在着地缓冲阶段的摆动和后蹬阶段的摆动。其中，着地缓冲阶段的摆动包括：体前支撑时的体后摆动、支撑面上方支撑时的体前摆动、体后支撑时的体前摆动；后蹬阶段的摆动是体前摆动。骨盆是以支撑腿的髋关节为轴，在盆带肌收缩产生肌拉力作用下，协同摆动腿的摆动特点而围绕髋关节转动。体前支撑时，摆动腿摆动和骨盆转动所产生的向后水平方向作用力，使人体获得的水平支撑反作用力，因小于人体受到的水平方向阻力，人体作减速运动
Through the analysis of the oscillating leg swing and the pelvic rotating technique when the 100m mid-distance running support is supported, it is concluded that the support swing includes the swinging of the support leg in the cushioning stage and the swinging in the rear pedal stage. Among them, the swinging of the ground-cushioning stage includes body swinging when the front body is supported, body swinging when the upper support surface is supported, body swinging when the body is supported by the rear body, swinging before the body support. The pelvis is the axis of the hip supporting the leg, the contraction of the pelvic muscles produce muscle tension, the swing swing leg swinging characteristics around the hip joint rotation. Body support, the swinging leg swing and pelvic rotation generated by the backward horizontal direction of the force, the human body to obtain the level of supportive reaction force is less than the human body by the horizontal resistance, the human body for deceleration