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本文通过文献资料、实验方法、结合本人从事多年的铅球训练经验,对在推铅球技术中的左腿支撑用力技术进行实验和理论上的分析。分析结果表明,左脚着地后的制动是左腿用力充分及快速蹬伸的基础,对运动员投掷成败起着积极地主导作用,在最后用力的推铅球力量的大小,关键在于左腿,它是推铅球动力的主要来源,所以,左腿支撑用力在推铅球过程中不但起到了制动与支撑作用,而且加大左腿蹬伸的力量与速度,对增加力量向铅球传递的效果及提远度都起着重要作用。
This article through the literature, experimental methods, combined with my many years of training experience in the shot put, put the shot put in the left leg support force technology experiment and theoretical analysis. The results show that the left foot after the brake is the left leg full and rapid kicking extension of the base, the success or failure of throwing athletes plays an active leading role in the last push the size of the power of the shot, the key lies in the left leg, it Is the main source of the shot put power, so the left leg support in the process of shooting the shot put not only played a braking and supporting role, but also to increase the strength and speed of left leg pedal stretch, to increase the effect of the force to the shot and to mention Far all play an important role.