Effect Of KAATSU Training On Lower Limb Muscle Function And Sports Performance Of Elite Women Volleyball Players In Shandong Province

Objective: To explore the influence of strength training with pressure belt on lower limb muscle function and sports performance of elite female volleyball players in Shandong Province.Methods: By using the methods of literature review,expert interview,experiment and mathematical statistics,this paper studied the effects of pressure training on lower limb muscle function and sports performance of elite female volleyball players in Shandong province.A total of 24 outstanding active women volleyball players from Shandong Province were selected to participate in this research(8 weeks in total;4times/week;100 minutes/time;Develop lower limb thrust every Monday and Friday,with squat as the main exercise;On Tuesdays and Saturdays,the lower limb tension is developed,and the main item is hard pull.The experimental subjects are randomly divided into the control group according to the position on the field(n = 12;Height184.9±6.9cm;The weight is 71.6±6.1kg;Thigh circumference 56.7±4.5cm)and the experimental group(n = 12;Height 184.7±5.7cm;The weight is 71.1±6.2kg;The thigh circumference is 56.2±4.8cm).The intervention lasted for 8 weeks.On the premise of normal training of all athletes in Shandong women’s volleyball team,only the lower limb push and lower limb pull were intervened.If the lower limb push was squat,the first four groups of the main events in the experimental group would squat under normal load,while the last four groups would squat with compression belts and reduce the corresponding load,while the control group and the experimental group would complete the same load,and the last four groups would only wear compression(comfort control was given to the athletes in the control group).Except for the squat of the main event,the athletes of the two groups of other auxiliary events are not pressurized,and the lower limbs are pulled hard,so the first four groups of the main events of the experimental group are pulled hard under normal load,while the last four groups are pulled hard with pressure belts to reduce the corresponding load,while the control group and the experimental group finish the same load,and the last four groups only wear pressure during practice(applying comfort control to the athletes of the control group).Except for the hard pull of the main event,the athletes of the two groups of other auxiliary events are not pressurized.Gymaware linear speed monitoring equipment is used to monitor and obtain the maximum weight that all athletes can accomplish by squat and hard pull at one time through cloud computing(one-repetition maximum;Hereinafter collectively referred to as 1RM).In the control group,the initial load of squat and hard pull is 73%1RM,with an increase of 2%RM per week.There are eight groups,each group needs to complete 9 times.The initial squat load of the experimental group was 73%1RM,and after finishing the four groups,the four groups were finished with 30%1RM by wearing a compression belt.Before and after the training intervention,the two groups of experimental subjects were tested by thigh circumference test,isokinetic muscle strength test,middle thigh tensile peak force test,SJ vertical jump peak height test,CMJ vertical jump peak height test,T-test,30-meter sprint ability test,5-meter starting ability test,half-meter-shaped movement ability test and 505-degree change ability test.Results:(1)Lower limb muscle function: There was no significant difference between the maximum strength group of lower limb squat and hard pull,and the effect amount of the experimental group was higher than that of the control group.Comparison of isokinetic muscle strength test indexes Except that the left flexor muscle group in the experimental group is obviously superior to the control group at an angular velocity of 240°/s,there is no significant difference in the work ability of flexor and extensor muscle groups in other angles.The effect of extensor muscle group in the control group is slightly greater than that of the experimental group,and the effect of flexor muscle group in the experimental group is slightly greater than that of the control group.There was no significant difference between the experimental group and the control group in testing the peak tensile force of the middle thigh,and the effect of the peak tensile force increase in the experimental group before and after the experiment was higher than that in the control group.(2)Sports performance: There is a significant difference between the experimental group and the control group before and after the T-test and half-meter movement test,and the effect of pressure resistance training is better than that of traditional resistance training.After the experiment,there was no difference between the experimental group and the control group in CMJ vertical jump test and 30 m sprint ability test,but the experimental group improved the above ability better than the control group.Conclusion:(1)Compression resistance training is superior to traditional training in improving the maximum strength of pushing and pulling lower limbs.(2)Both compression resistance training and traditional resistance training can improve the ability of lower limbs to do work,but compression resistance training has a greater impact on improving the muscle function of lower limbs.(3)Pressurized resistance training is better than traditional resistance training in improving volleyball players’ performance.