A Study on Correlation between Lower Limb Functional Asymmetry and Stomping Movement Performance in High-level Taijiquan Players
The objective of this study was to investigate the correlation between the functional asymmetry of the lower limbs and the performance of stomping movement in high-level Taijiquan players.Fourteen high-level Taijiquan players were tested with Vicon 3D Motion Capture System and Kistler 3D Force Measurement Table.Single-Leg Countermovement Jump(SLCMJ),Single-Leg Broad Jump(SLBJ),Single-Leg Lateral Jump(SLLJ)and stomping techniques were tested.The Pearson's correlation analyses of the lower limb joint angles,joint mobility and centre of gravity displacements were carried out with the asymmetry indices.The results showed that the asymmetry index was SLCMJ(5.64)＞SLBJ(4.2)＞SLLJ(3.44).There were highly significant differences(P＜0.01)between the dominant and non-dominant stirrup leg in terms of hip flexion and knee rotation at the moment of knee lifting,hip flexion and rotation at the moment of stirrup extension,knee flexion and extension at the moment of stirrup extension,and range of Motion of the Rotator(ROM))(p＜0.01).There were significant differences between the dominant side and the non-dominant stirrup leg in hip internal rotation angle at the moment of knee lift,knee flexion angle at the moment of stirrup extension,,knee rotation ROM at the moment of knee lift,and knee flexion,extension and rotation ROM at the moment of knee flexion and retraction(p＜0.05).There were significant differences between the dominant side and the non-dominant support leg in knee flexion at the moment of flexion and retraction angle,ankle rotation ROM and centre of gravity displacement in the left-right direction at the time of stomping and extending(p＜0.05).The lower limb asymmetry index was highly positive correlated with the hip and knee rotation angles of the stomping and supporting legs,and the left-right direction of the non-dominant centre of gravity displacement.The lower limb asymmetry index was moderately negative correlated with the hip flexion angle of the stomping and extending leg,the hip flexion angle of the supporting leg,the dominant centre of gravity displacement,and the hip flexion angle of the supporting leg,as well as the dominant centre of gravity displacement.The lower limb asymmetry index showed a highly significant moderate negative correlation with the hip flexion angle of the stomping leg,the hip flexion angle of the supporting leg,and the anterior-posterior direction of the predominant eccentric displacement.It could be seen that high level Taijiquan players had better stability and balance control ability in the kicking process on the dominant side compared to the non dominant side support leg.The non dominant side had a greater range of hip and knee joint movements during the knee lifting and kicking stages compared to the dominant side extension leg.Therefore,there was a significant correlation between the asymmetry of lower limb function and the performance of kicking movements in high-level Taijiquan players.
万方数据
维普
