Coordination Characteristics of the Attack Leg in Front Roundhouse Kick of Competitive Taekwondo
10.16156/j.1004-7220.2025.03.010
- VernacularTitle:竞技跆拳道前横踢动作进攻腿的运动协调特征
- Author:
Jiayang ZHOU
1
;
Mengyao JIA
;
Yong MA
;
Lin LIU
;
Shijie LIN
Author Information
1. 武汉体育学院智能体育工程学院,武汉 430079;武汉体育学院运动健康智能装备湖北省工程研究中心,武汉 430079;武汉体育学院国家体育总局体育工程重点实验室,武汉 430079
- Publication Type:Journal Article
- Keywords:
Taekwondo;
roundhouse kick;
continuous relative phase method;
muscle synergy;
joint coordination
- From:
Journal of Medical Biomechanics
2025;40(3):588-598
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the motor coordination characteristics of the attack leg of the athletes under scoring actions in the front roundhouse kick of competitive taekwondo,and provide a theoretical basis for coaches to formulate precise training strategies in stages and segments so as to enhance the efficiency and success rate of the athletes' movements.Methods Kinematic data and surface electromyography signals were collected from 15 elite Taekwondo athletes during different phases of the front roundhouse kick.The continuous relative phase(CRP)method was used to calculate the joint coordination and variability of continuous relative phase(VCRP),while non-negative matrix factorization and k-means clustering were used to analyze muscle synergy characteristics.Results The coupling of the neural launch phase was dominated by knee-ankle coupling in coronal axis and hip-ankle coupling in sagittal axis.The coupling of the kicking phase was dominated by hip-knee,hip-ankle in coronal axis,and knee-ankle coupling in vertical axis.The coupling of the recovery phase was dominated by hip-knee,hip-ankle coupling in coronal axis,and knee-ankle coupling in sagittal axis.These coupling relationships remained relatively stable around 0 rad.Approximately 80.0％VCRP remained stable across all phases,with minor fluctuations occurring at phase transitions.A total of 4,5,and 4 muscle synergy clusters were identified in neural launch,kicking,recovery phases,respectively.There were significant differences in the mean gap values among phases(P＜0.001).However,there were no significant differences in the mean sparsity values among phases(P＞0.05).Some muscle synergies were shared across phases,while others differentiated to form phase-specific coordination patterns.Conclusions Joint coordination in each phase exhibited 1-3 primary stable patterns with flexibility during transitions.Muscle coordination was dynamically adjusted throughout the motion,and a general muscle synergy pattern functioned consistently across different phases,whereas a differentiated muscle synergy pattern fulfilled the phase-specific functional demands.The neural launch and kicking phases should be focused on during training,with the emphasis on controling over critical points to optimize performance.
