Effects of blood flow restriction on muscle strength and shape in freestyle wrestlers during special training
10.3969/j.issn.1000-6710.2024.05.004
- VernacularTitle:自由跤运动员专项训练时的血流限制对其肌肉力量和形态的影响
- Author:
Xiaolei JI
1
;
Xinyi WU
;
Ke SUN
;
Zhiguang ZHAO
Author Information
1. 北京市体育科学研究所(北京 100075)
- Keywords:
KAATSU training;
blood flow restriction training;
freestyle wrestling;
special training;
body composition;
musculoskeletal ultrasound;
strength
- From:
Chinese Journal of Sports Medicine
2024;43(5):348-355
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect of blood flow restriction on muscle strength,body compo-sition,circumferences of both lower and upper extremities,and muscle thickness of female freestyle wrestlers during a 4-week freestyle wrestling camp training.Methods Twenty female freestyle wrestlers of Beijing Team with more than 5 years'training were randomly divided into a KAATSU group and a control group.Both groups performed the same wrestling training program,during which the KAATSU group wore blood flow restriction elastic bands.The changes of muscle strength,body composition,limb circumferences,and muscle thickness were compared between the two groups before and after the training.Results After the training,no significant differences were found in both groups in the average body composition(P>0.05).However,after the training,in the KAATSU group,the weight and skele-tal muscle mass increased by 0.57%and 4.10%,respectively,while the amount of fat decreased by 1.48%.Moreover,after the intervention,no significant changes were found in the average circumferenc-es of all limbs except that of the right upper arm,with its increase in the KAATSU group significant-ly greater than the control group.Meanwhile,compared with before training,the thickness of biceps in relaxation as well as quadriceps in relaxation and contraction increased in both groups,with signifi-cant greater increase in the KAATSU group than the control group in relaxation.To be more specific,the thickness of biceps and quadriceps in relaxation increased by 26.59%and 22.36%in the KAAT-SU group after the training(P<0.05 for all).In addition,after the training,the peak torque of the left knee flexion and right knee extension increased in both groups(P<0.05),with the increase in the KAATSU group(6.00%and 8.87%)significantly greater than the control group(5.42%and 0.00%).Moreover,after the training,the maximum strength of squat,bench press,and bench pull in the KAATSU group increased significantly(P<0.05),whose strength of bench press was 70.63 kg,signifi-cantly higher than the control group(51.07 kg),with significantly greater increase than the control group(9.45%vs.0.46%).Conclusion The 4-week freestyle wrestling training with blood flow restric-tion is superior to traditional training in maintaining the ideal body weight,promoting the mass of the major muscles of limbs,the maximum strength of skeletal muscles and related joints during squatting,bench press and bench pull.
