旋转掷铁饼技术中肩、髋、铁饼及人体重心的时空特征研究

Research on Space-time Characteristic of Shoulder,Hip,Discus and Center of Gravity of Thrower in Rotational Discus Throwing Technique

运用近景动态立体摄像的方法 ,对我国优秀女子运动员完成旋转掷铁饼技术时的肩、髋、铁饼及人体重心的时空特征进行了三维分析。表明不同时空的肩、髋、铁饼及人体重心处于不同的位置 ,是与铁饼技术要求紧密相关的 ,破坏了各个时空中肩、髋、铁饼及人体重心的时空结构势必会影响掷铁饼技术、速度和最后的运动成绩 ;

By using the method of close shot dynamic photograph,this paper makes three-dimensional analysis on space-time of shoulder,hip,discus and center of gravity of our elite female discus thrower in rotational discus throwing technique.The result shows that the position of shoulder,hip,discus and center of gravity of thrower in every time space are at different position,there are closely related to throwing discus technique.If space-time characteristics are broken,it bound to affect discuss throwing technique,velocity and result of thrower.The velocity variation of discuss and center of gravity shows that rhythm characteristics of rotating throwing discus technique.