| Purposes:The post-activation potentiation has a significant improvement in athletes’ subsequent sports performance.At present,research on post-activation potentiation mainly focuses on a single perspective such as load intensity,interval time,and exercise level,and there is still a lot of research space for post-activation potentiation.This study explores the impact of different interval times,different load intensity stimuli,different exercise levels,and their interactive effects on the lower limb explosive power of male college volleyball athletes,and explores the optimal load intensity and interval time combination to stimulate their lower limb explosive power.Methods: Using the method of literature,experiment and mathematical statistics,this study applied 65%1RM,75%1RM,85%1RM and 95%1RM to 10 male volleyball players in the school volleyball team(including 7 in the first level and 3 in the second level),respectively,and conducted the standing long jump and vertical jump tests at five time points of 2 minutes,6 minutes,10 minutes,14 minutes and 18 minutes after the intervention,and analyzed the changes of each test index.Results:The results showed that:(1)Under the load intensity of 65% 1RM,the results of vertical jump and standing long jump were improved in 2 minutes(+0.095,+0.159),6 minutes(+0.147,+0.146),10 minutes(+0.061,+0.167),14 minutes(+0.032,+0.099)and 18 minutes(+0.024,+0.139)compared with the baseline value.(2)Under 75% 1RM load intensity,the results of vertical jump and standing long jump were improved in 2 minutes(+0.116,+0.197),6 minutes(+0.117,+0.192),10 minutes(+0.082,+0.212),14 minutes(+0.059,+0.201)and 18minutes(+0.043,+0.195)compared with the baseline value.(3)Under the load intensity of85% 1RM,the results of vertical jump and standing long jump were improved in 2 minutes(+0.036,+0.198),6 minutes(+0.032,+0.262),10 minutes(+0.029,+0.242),14 minutes(+0.027,+0.188)and 18 minutes(+0.026,+0.185)compared with the baseline value.(4)Under95% 1RM load intensity,the results of vertical jump and standing long jump were improved in 2 minutes(+0.046,+0.194),6 minutes(+0.046,+0.217),10 minutes(+0.022,+0.222),14minutes(+0.021,+0.173),and 18 minutes(+0.027,+0.180)compared with the baseline value.(5)Compared with the baseline value,the performance of the first and second level male college volleyball players in the vertical jump(+0.058,+0.027)and the standing long jump(+0.181,+0.150)has improved.(6)The interaction effect of different load intensity,different interval time and different exercise levels has significant difference with the longitudinal jump performance of male college volleyball players(P < 0.05),and has no significant difference with the standing long jump performance(P>0.05).Conclusions:(1)In terms of post-activation interval,the post-activation potentiation has a certain degree of improvement on the explosive force of lower limbs of male college volleyball players.(2)In terms of post-activation load intensity,the post-activation potentiation has a certain degree of improvement on the explosive force of lower limbs of male college volleyball players.(3)In terms of post-activation load intensity and interval time,when the post-activation load intensity is 65% 1RM and the interval time is 6 minutes,the post-activation potentiation is the best for male college volleyball players to induce the explosive force in the vertical direction.When the post-activation load intensity is 85% 1RM and the interval time is 6 minutes,the post-activation potentiation is the best for male college volleyball players to induce the explosive force in the horizontal direction.The intensity of post-activation load is 65% 1RM and 85% 1RM,and the interval time is 6 minutes.(4)In terms of the level of post-activated athletes,the higher the level of male college volleyball players,the greater the improvement of their lower limb explosive power.(5)The post-activation potentiation began to appear at 2 minutes and began to fade at 18 minutes. |
PDF Full Text Request