The Effect Of Velocity-Based Strength Training On The Lower Limbs Power-Related Athletic Abilities Of College Basketball Athletes By Back Squat

Objective:The purpose of this study was to analyze the effect of velocity-based strength training on the lower limbs power-related athletic abilities of college basketball athletes by back squat.Methods:20 male basketball athletes(age=20.10±1.42,average height 180±5.80cm,average weight=73.87±9.13kg,body mass index(BMI)=22.72±2.33kg/m~2,training years=3.20±0.40 years)majoring in physical education and basketball of 2018 from Wuhan Sports University were enrolled in this study.The subjects were randomly divided into the experimental group(n=10)and the control group(n=10).The control group used traditional strength training with a constant load of 75%1RM and the experimental group used velocity-based strength training(VBT)with 75%1RM corresponding speed.Then,two groups performed limb strength training for 8 weeks,twice a week,4 sets and 6 reps.The control group subjects used 75%1RM constant load to perform the back squat strength training as fast as possible.The experimental group performed the testing of 75%1RM corresponding speed,and tried their best to squat 3 times quickly with taking the average before training.The experimental group used 75%1RM corresponding speed to perform the strength training,and adjusted the back squat load when the speed changes beyond±5%in time.Before and after the training,two groups of subjects were tested some indicators,such as1RM back squat test,vertical jump height test,relative maximum force test,vertical speed test,relative maximum power test,10 yards test and T-test.Results:(1)After 8 weeks of training,there was a significant increase in 1RM back squat for the control group(P=0.00)and the experimental group(P=0.00).(2)After 8 weeks of training,there were significant increase in vertical jump height(P=0.03)and vertical speed(P=0.041)for the control group,and there were significant increase in vertical jump(P=0.006),relative maximum force(P=0.022),vertical speed(P=0.03)and relative maximum power(P=0.018)for the experimental group.(3)After 8 weeks of training,there was a significant increase in 10 yards for the control group(P=0.00)and the experimental group(P=0.00).(4)After 8 weeks of training,there was a significant increase in T-test for the control group(P=0.00)and the experimental group(P=0.00).(5)After 8 weeks of training,the T-test showed significant difference between the experimental group and the control group(P=0.049).Conclusion:(1)After 8 weeks of training,the traditional strength training group and the velocity-based strength training group have a extremely significant effect on 1RM back squat,and the effect of the velocity-based strength training group is better than the traditional strength training group.(2)The traditional strength training group just has a significant effect on vertical jump height and vertical speed,and the velocity-based strength training group has a extremely significant effect on vertical jump,relative maximum force,vertical speed and relative maximum power.In addition,the intervention effect of the velocity-based strength training group is better than the traditional strength training group in vertical jump height.(3)The traditional strength training group and the velocity-based strength training group have a extremely significant effect on 10 yards,and the effect of the velocity-based strength training group is better than the traditional strength training group.(4)The traditional strength training group and the velocity-based strength training group have a extremely significant effect on T-test,and the effect of the velocity-based strength training group is better than the traditional strength training group.In addition,the training methods of the traditional strength training group and the the velocity-based strength training group only have a different effect on the T-test.