Biomechanical Analysis of Practicing Chen-Style Tai Chi with Knee Pain
In this study,12 Chen-style Taijiquan practitioners,including 6 practitioners with knee pain and 6 healthy practitioners,were selected to record the kinetic and kinematic data of the 12 practitioners'"lazy clothes"movements by using the Vicon 3D motion capture system,and compared the action characteristics of the two groups of practitioners at each stage,so as to provide a reference for improving the accuracy and standardization of the practitioners'technical movements and avoiding sports injuries.The results showed that:(1)Compared with the change of knee joint angle in the control group,the knee adduction of the supporting leg in the pain group was in the P1～P3 stage(P<0.05),the external rotation of the supporting leg was smaller in the P1 and P2 stages(P<0.05),and the external rotation of the striding leg was smaller in the P1～P3 stage(P<0.01).(2)Compared with the control group,the pain group showed spinal flexion in the P1～P3 stage(P<0.05).(3)Compared with the control group,the flexion moment of the supporting leg in the pain group was smaller in the P1 and P2 sta-ges and the P2 and P3 stages of the striding leg(P<0.05),the abduction moment of the supporting leg in the P2 and P3 stages of the supporting leg and the striding leg was smaller(P<0.05)in the P1～P3 stage,and the exter-nal rotation moment of the supporting leg was smaller than that in the control group in the P1 stage(P<0.05).Conclusion:1.The knee joint angle of the supporting leg in the pain group continued to be adducted,and no obvi-ous changes were observed during the whole exercise,which will make the knee joint in an unstable state,increase the burden on the soft tissues and structures around the joint,and thus cause knee joint injury.2.The smaller angle of external rotation in the pain group makes the knee joint less laxity and needs to bear the double load of flexion and internal rotation,which further increases the potential risk of knee injury.3.The pain group can not make good use of the stretching of the trunk to reduce the load on the lower limbs when the center of gravity of the body drops,and the forward bending of the body during the whole movement will increase the load on the knee joint,resulting in injury.4.The pain group bears the work of knee adduction moment during exercise,which increases the load on the medial chamber of the knee joint and increases the risk of injury.
college studentsChen's Taijiquanknee painlazy tie clothesBiomechanics
万方数据
维普
