摘要
目的 分析优秀男子速度攀岩运动员Tomoa skip技术肌电特征,为专项力量训练方法和手段的确定提供理论依据。方法 招募10名一级及以上级别男子速度攀岩运动员,采集其攀爬国际标准赛道的Tomoa skip技术运动学和表面肌电数据。结果 Tomoa skip技术中肌肉贡献率大小排序依次为肱二头肌、肱三头肌长头、指浅屈肌、背阔肌、胫骨前肌、股外侧肌、臀大肌、腓肠肌内侧头。左侧所有肌肉贡献率之和、肱二头肌和肱三头肌长头贡献率显著低于右侧(P<0.05),左侧腓肠肌内侧头的贡献率显著高于右侧(P<0.05);左侧肱二头肌的激活程度显著低于右侧(P<0.05)。左侧肘关节和踝关节、右侧肘关节和踝关节共收缩指数分别为0.93±0.21、1.33±0.14、0.72±0.10、2.08±0.59,左侧肘关节和踝关节的共收缩程度显著高于右侧(P<0.05)。结论 Tomoa skip技术中男子运动员表现出明显的肌电特征,左右侧上肢肌肉和背阔肌的贡献率均高于下肢肌肉,肘关节和踝关节分别是以肱二头肌和胫骨前肌为主导的激活模式;同时肌电特征也存在显著的左右侧肢体间差异,上肢肌肉贡献率和激活程度的左右侧肢体间差异大于下肢。
Objective To analyze the electromyography(EMG)characteristics of high-level male speed climbers using Tomoa skip technique,and provide a theoretical basis for the determination of special strength training methods and means.Methods Ten male speed climbers at national first level or above were recruited,and their kinematics and surface EMG signal data using Tomoa skip technique during climbing the official route were collected.Results For using Tomoa skip technique,the order of the main muscle contribution rate for high-level male speed climbers was biceps brachii,triceps brachii,flexor digitorum superficialis,latissimus dorsi,anterior tibial,vastus lateralis,gluteus maximus,medial head of gastrocnemius muscle.The sum of all muscle contribution rates of the left side,the contribution rate of biceps brachii and triceps brachii were significantly lower than that of the right side(P<005).The contribution rate of medial head of left gastrocnemius muscle was significantly higher than that of right side(P<0.05).The level of activation of the left biceps brachii was significantly lower than that of the right side(P<0.05).The co-contraction indexes of left elbow joint and ankle joint,right elbow joint and ankle joint were 0.93±0.21,1.33±0.14,0.72±0.10,2.08±0.59,respectively.The co-contraction level of the left elbow joint and ankle joint was significantly higher than that of the right side(P<0.05).Conclusions High-level male speed climbers using Tomoa skip technique showed obvious EMG characteristics,and the contribution rate of the upper limb muscles and latissimus dorsi were higher than that of the lower limb.The activation mode of elbow joint was dominated by biceps brachii,and that of ankle joint was dominated by anterior tibial muscle.There exsited differences between the left and right limbs in coordinated movement modes.The difference of contribution rate and activation level of the upper limb between the left and right side was more than that of the lower limb.
作者
游国鹏
伍勰
李红梅
耿宇
赵少聪
YOU Guopeng;WU Xie;LI Hongmei;GENG Yu;ZHAO Shaocong(Department of Physical Education,Xiamen University of Technology,Xiamen 361024,Fujian,China;School of Exercise and Health,Shanghai University of Sport,Shanghai 200438,China;Department of Physical Education,Jiyang College of Zhejiang A&F University,Shaoxing 311800,Zhejiang,China)
出处
《医用生物力学》
北大核心
2025年第3期553-560,共8页
Journal of Medical Biomechanics
基金
国家社科基金项目(22ATY002)。
作者简介
通信作者:赵少聪,教授,E-mail:shczhao@xmut.edu.cn。
