Research On The Influence Of Squat Training With Different Intermittent Structure On The Explosive Force Of Lower Limbs Of College Male Basketball Players

Purposes: In strength training,the number of training groups,times,interval time,training load and the choice of movements will have a great influence on the training effect.In traditional strength training,interval time is usually set after a group of strength training,and the number of interval time is often set according to the training purpose.For example,in explosive force training,the interval time is usually set to 3-5 minutes,so as to completely recover the energy materials consumed during training,and then better carry out the next group of training.However,in recent years,some researchers have found that the training benefit can be significantly improved by changing the structure and length of interval time.Haff et al.(2003)called this method Cluster Sets Training(CS)and proposed three classical intermittent grouping forms.In this paper,the intermittent time redistribution(ISR)and interval between repetitions(IRR)in group training(CS)are compared and studied,and the difference influence of 8-week squat training on explosive dynamics and sports performance indexes is explored.Methods: Twenty-eight male students majoring in basketball in Grade 2022 of Shandong Institute of Physical Education were selected.The subjects were all national second-class athletes who were proficient in squat movements and had more than two years of strength training experience.Subjects were randomly divided into ISR group(n=14)and IRR group(n=14).ISR group used interval training within the group,and IRR group used interval training between repetitions.Both training programs contain 72 squats with 70%1RM,and the total interval duration of each group is 120 seconds,but the repetition times and interval frequency of each program are different:(1)ISR completes 12 squats ×6 groups(interval within the group is 30 seconds);(2)IRR completed a squat ×72groups(with an interval of 10 seconds between groups).Before and after 8 weeks of lower limb strength intervention training,the peak power of 3/4 field sprint,agility movement in restricted area,in-situ touch height,run-up touch height,standing long jump and squat jump(SJ)were tested.After the experiment,the experimental data were summarized by Excel and statistically analyzed by SPSS.Results:(1)After 8 weeks of training,the indexes of mobile explosive power of ISR and IRR increased significantly compared with those before intervention(P=0.00),among which,the improvement effects of the two groups on 3/4 field sprint were similar,while the improvement effect of IRR in the restricted area agility test was significantly higher than that of ISR(P<0.05).(2)After the intervention training,the jumping explosive indexes of 2)ISR and IRR(in-situ touch height,run-up touch height and standing long jump)were significantly higher than before(P < 0.05);Among them,the in-situ height of ISR was significantly higher than that of IRR(P < 0.05).After the intervention training,IRR’s run-up and standing long jump scores were slightly higher than ISR’s,but there was no significant difference between the two groups(P> 0.05).(3)After training,the dynamic indexes of the two groups were significantly improved(P<0.05).Compared with ISR,the improvement effect of IRR was more significant,but there was no difference between the two groups.Conclusions:(1)The strength training with two different grouping structures can significantly improve the straight line sprint,multi-direction movement and the peak power performance of squat jump of college men’s basketball special students.(2)Compared with intra-group interval training,the repeated interval training was more conducive to improving the multi-directional movement ability of the subjects.(3)In improving the jumping ability,compared with the interval between repetitions,the interval training within the group was more conducive to improving the in-situ longitudinal jump ability of the subjects;Interval training between repetitions had better and more significant effects on increasing the peak power of run-up and squat jump,but there was no significant difference between the two groups of training methods.