一、选题依据最后用力投出器械的动作是各项投掷运动取得优异运动成绩的关键技术阶段。这是中、外教练员、运动员都把它放在特别重要的地位进行研究,并在训练中想方设法加以改进,使之更加完善的重要原因。那么各项投掷最后用力完成好坏的标志是什么呢?运动生物力学告诉我们: First, the selection of the basis for the last force throwing equipment is the throwing movement achieved excellent results of the key technical stages. This is an important reason why both Chinese and foreign coaches and athletes have put it in a particularly important position to study and find ways to improve and make them more perfect in training. So what is the sign of the last hurdle to complete the good or bad? Sport biomechanics tell us: