在课堂教学和训练中,常会发现学生在推铅球过程中存在“掉肘”现象,所谓“掉肘”是指伸臂推铅球过程中,练习者肘关节下掉,肘尖向下,形成前臂与地面垂直,从而变推铅球为投铅球。此错误动作不但影响发力(即练习者反映是有劲使不出来),而且易引起肘关节肌纤维的拉伤。这给铅球教学、训练带来很大障碍。 In classroom teaching and training, students often find that there is a phenomenon of “elbow” in the process of putting shots. The so-called “elbow” means that elbows are dropped off by the elbows, Under the formation of forearms perpendicular to the ground, thus changing the shot put shot. This erroneous action not only affects the exertion (that is, the practitioner can not express it out of strength), and can easily cause the elbow muscle fiber strain. This gives the shot put teaching, training has brought great obstacles.