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从力学的角度来研究跳高,跳跃运动员的最大腾起高度由三个高度来确定:脚放到支点瞬间运动员总重心的高度、起跳时运动员总重心上升高度及由运动员的垂直速度所决定的总重心腾起高度。运动员所越过的横竿高度决定于最大腾起高度与横竿和运动员总重心高度的距离之差(图1)。如果能增加腾起高度和减少横竿与总重心之间的距离,自然,运动成绩将提高。如果减少蹬地时间(增加运动员垂直向上的速度),在这
From the perspective of mechanics to study the height of jump, the maximum height of jumping athletes is determined by three levels: the height of the total center of gravity of the athlete when the foot is placed on the fulcrum, the total height of the athlete’s ascent and the vertical speed of the athlete Center of gravity soaring. The height of the crossbar the athlete crosses depends on the difference between the maximum heel height and the total center of gravity of the crossbar and the athlete (Figure 1). If you can increase the height and reduce the horizontal pole and the total distance between the center of gravity, naturally, sports performance will improve. If you reduce the pedal time (increasing the athlete’s vertical upward speed), here