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根据认可的权威性实验图表分析百米途中跑后蹬阶段后蹬腿产生后蹬力和后蹬腿各个关节角度的变化，得出：后蹬阶段后蹬腿产生后蹬力使人体获得的支撑反作用力对人体运动的作用，包括人体作向前上方加速运动时期；人体作垂直方向惯性运动、作水平方向加速运动时期。在脚离地时相后蹬腿没有充分蹬直，是由于后蹬腿如果继续后蹬，后蹬腿产生后蹬力使人体获得的支撑反作用力小于空气阻力，人体无加速运动。百米途中跑后蹬阶段人体重心最低点是在人体重心在支撑垂直上方时相。
According to the approved authoritative experimental charts, the changes of the pedaling force and the angles of the knuckles of the knuckles after the pedaling step after running in the midsummer were analyzed. The results showed that the knuckle force after the pedaling of the pedaling part resulted in the supportive reaction force The role of human movement, including the human body to move forward to accelerate the period of time; human body for vertical inertial movement, horizontal acceleration during the movement. In the foot off the ground after the kick is not fully pedaled, is due to the rear kick if you continue to pedal after the kick after the pedal force to make the body to obtain supportive reaction force is less than the air resistance, the body without acceleration. 100 meters after the race run back stage the lowest point of the human body is the center of gravity in the human body when the vertical support phase.