A Study On The Effect Of 8-week KAATSU Training On The Lower Limb Strength Of Sprint-specialized College Students

Objective: Through 8 weeks of compression intervention training,to test the knee isokinetic muscle strength,1RM of lower limb muscles,force platform jumping,and field running time of sprint college students before and after the intervention,and to explore the effects of compression training on the lower limb strength of sprint college students Training effect.Methods: Using experimental methods,literature data methods,data statistics methods and other research methods,the selected 18 sprinting college students were selected for 8 weeks of group intervention,9 people in the compression training group(compression group),traditional heavy load resistance 9 people(traditional group).Use HUMAC isokinetic muscle strength test system,Kistler three-dimensional force measurement platform,Smart Speed segmented timing device,and Legend comprehensive strength training frame to collect various lower limb strength indicators of the subjects before and after the intervention,and use SPSS software to carry out the measured data Statistical analysis of differences.Result:(1)After the intervention of the compression group,the relative peak torque of the left and right knee joints at 60°/S showed a very significant difference(P<0.01).After the intervention of the traditional group,there were significant differences in the relative peak torque of the left knee joint extension and right knee joint extension(P<0.05).Compared with the traditional group,there was a significant difference in the relative peak torque flexion index of the right knee in the compression group after8 weeks of intervention(P<0.05).(2)There were significant differences in the relative peak power of the left and right knee joints before and after the 8-week intervention training in the traditional group(P<0.05),but the relative power extension of the left knee and the relative peak power flexion of the right knee were higher in the compression group.There was no significant difference before intervention(P>0.05).The force plate without pre-swing vertical jump(SJ)after the intervention of the two groups of subjects,the ground reaction force and relative power in the stepping stage have different degrees of improvement,but the traditional group has a significant increase in the initial speed of the pressure group than the pressure group Advantage.(3)In the force platform depth jump(DJ)test,except for the significant difference in the reaction force index of the pressure group(P<0.05),the ratio of the time to support and the height of the flight of the traditional group and the pressure group were both significantly different.Produced a very significant difference(P<0.01).(4)Smart Speed 0-30 m and 0-60 m pressure group had significant differences compared with before intervention(P<0.05),and the traditional group 0-60 m used time was significantly different than before intervention(P<0.05).Conclusion:(1)Eight weeks of pressure training with 30% 1RM intensity can improve the maximum strength,fast strength and reaction strength of lower limbs,indicating that pressure training,as a new training method,can be used as one of the means to improve the lower limbs strength of sprint college students.(2)The intervention program of pressure training adopted in this study was superior to the traditional group in terms of maximum strength and strength related indicators,especially in terms of the training effect of lower limb flexor.(3)The pressure training adopted in this study can significantly improve the 30 m and 60 m performance of sprint college students,especially the acceleration effect of the first 30 m is more obvious than that of the traditional group,indicating that pressure training can significantly improve the starting acceleration ability of sprint college students.