推铅球最后用力过程中左腿支撑技术分析

Analysis of the Left Leg Support Techniques at the Final Stage of Throwing Shot

运用田径理论和运动力学原理，分析推铅球时左腿在最后用力过程中如何形成合理的支撑技术．结果表明：在最后用力过程中，左腿的主动快落和支撑用力可获得良好的超越器械姿势，能够有效地提高铅球成绩．

By using the track and field theory and principles of mechanics, the reasonable left leg support techniques in the course of the final pushing is analyzed. The results show that sporter can get a good pose of body before apparatus if the left leg quickly touches ground and supports force.