The Effects Of Different Weight Medicine-ball Side Throw On The Activation Of Tennis Plaver

Experimental purpose: this research aims to measured the explosive force,swing speed and other indicators when players do side flip ball training activities with different weight ball,trying to explore best medicine ball weight tennis and the best activation effect of delayed time of tennis players.Experimental methods: this study selected 10 Beijing sports university tennis special who are national secondary athletes,after the basic exercises they do the medicine ball training of different weight(six pounds,eight pounds,ten pounds)for six times,and then in 0 minutes,15 minutes and 30 minutes respectively test the hitting swing speed and side medicine ball explosive force,and then use SPSS16.0 statistical software repeated measures analysis of variance.Results: study 1:the speeds of players before the training swing were 62.5m/s,63.50 m/s(after 6 pounds ball training),65.90m/s(after 8 pounds ball training),63.80m/s(after 10 pounds ball training),which means that after the training of side medicine-ball throw the swing speed is significantly higher than without training,the ball weight of 8 pounds is the best.The significance of training of 0 minutes,15 minutes,30 minutes were respectively,8 pounds of medicine ball side behind practice 15 minutes of time points after the biggest swing speed.Study 2: The explosive force of players with 6 pounds,8 pounds,10 pounds of medicine ball side throw training were respectively 2118.3w,3012.5w,2380w?Medicine ball side behind the different weight of explosive force and the corresponding weight practice medicine ball side behind swing speed of correlation coefficient is 0.435,0.398,0.412.Conclusions: the tennis players can use special warm-up before the game with 8 pounds of medicine ball(approximately 5% BW)for best activation in15 minutes before the beginning of the game.Improve the rotation of the tennis players can effectively improve the racquet speed.