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在现代乒乓球技术中,特别是改用40mm大球的今天,不断加快挥拍的速度,增大击球力量是提高竞技水平的重要途径之一。然而,要测定乒乓球运动员极快的挥拍速度,必须使用高速摄影等特殊手段,一般很难完成。为寻求一种简便易行的办法.我们对击球瞬间挥拍速度与被击出的球飞出距离的关系进行了实验研究。结果发现,挥拍速度与球的飞出距离两变量间存在显著的相关关系。在使用40mm乒乓球的情况下,相关系数男子为0.881(P<0.01),女子为0.889(P<0.01)。用测量扣杀时球飞出距离来推算击球瞬间的挥拍速度,作为一种简便方法是可行的。
In modern table tennis technology, especially the switch to 40mm big ball today, continue to speed up the swing speed, increase the batting power is to improve the competitive level of one of the important ways. However, to determine the extremely fast swing speed of table tennis players, special measures such as high-speed photography must be used and it is generally difficult to accomplish. In order to find a simple and easy way, we conducted an experimental study on the relationship between the speed of swing shot and the shot out of the ball. The results show that there is a significant correlation between swing speed and ball flight distance between two variables. In the case of 40mm table tennis, the correlation coefficient was 0.881 for men (P <0.01) and 0.889 for women (P <0.01). It is feasible as a simple method to measure the swing speed at the moment of impact by measuring the ball’s flying distance when it is smashed.