最后用力时铅球运行距离、时间与成绩的关系

RELATION BETWEEN MOVING DISTANCE AND TIME OF SHOT AND RESULT AT THE TIME THRUSTING THE SHOT AWAY

对推铅球最后用力的有关数据，采用“直线回归”方法进行统计处理和相关分析。结论：最后用力的准备部分，应减小铅球运行距离，缩短时间。加速部分，尽量增加铅球运行距离，适当延长其时间，有利于加快铅球出手的初速度，提高运动成绩。

With linear regression to analyse interrelation,the conclusion is to shorten moving distance of shot at preparing section of thrusting the shot away;to increase moving distance of shot at accelerating section in order to increase initial velocity of thrusting the shot away.