旋转掷链球是技术复杂的项目,运动员在最后用力前必须持球旋转三至四圈,旋转结束时,链球的速度可达最后出手速度的80％左右。因此,提高链球在旋转过程中的速度是取得好的运动成绩的一个重要因素。在旋转过程中,链球是围绕着通过运动员支撑脚为支点的轴进行转动,转动半径和转动角速度是影响链球 Spinning Hammering Hammering is a technically complex project where an athlete must spin the ball three to four times before the last force, and at the end of the spin, the speed of the hammer reaches up to about 80% of the final shot speed. Therefore, increasing the speed at which the hammer is spinning is an important factor in achieving good athletic performance. During rotation, the hammer is rotated around an axis supported by the support legs of the player. The radius of rotation and the angular velocity of rotation affect the speed of the chain ball