不同站距下硬拉技术的膝关节力学和肌电图分析  

Electromyographic and Kinetics Analysis of Deadlift Technique with Varying Stance Widths

作　　者：兰景越 于潇[1] 张冬梅[1] Lan Jingyue;Yu Xiao;Zhang Dongmei(Mudanjiang Normal University,Mudanjiang 157000,China)

机构地区：[1]牡丹江师范学院,黑龙江牡丹江157000

出　　处：《体育科技文献通报》2024年第4期261-264,共4页Bulletin of Sport Science & Technology

基　　金：黑龙江省教育厅基本科研业务费项目(项目编号:1354MSYYB020);牡丹江师范学院研究生科技创新项目(项目编号:kjcx2023-090mdjnu)。

摘　　要：目的:比较站距比肩宽为1、1.5、2下硬拉技术的肌肉活动特征和膝关节力矩。方法:采用文献资料法、实验法、数理统计法等研究方法,利用8台Qualisys600系列红外摄像头、1块AMTI-0.5m测力台、DELSY表面肌电与QTM运动捕捉系统收集8名受试者在8RM强度下的相关数据,并采用Opensim、MATLAB和SPSS进行数据处理。结果:与肩同宽站姿硬拉技术的内侧腓肠肌激活程度显著大于1.5倍肩宽硬拉(P<0.05),且股外侧肌、股内侧肌和胫骨前肌显著小于1.5倍肩宽(P<0.05);站姿为1.5倍肩宽硬拉的内侧腓肠肌激活程度显著大于2倍肩宽硬拉(P<0.05),且股外侧肌、股内侧肌和胫骨前肌显著小于2倍肩宽(P<0.05);站姿为2倍肩宽下的膝关节屈曲和内收力矩显著大于1.5倍肩宽(P<0.05),1.5倍肩宽下的屈曲内收力矩显著大于与肩同宽硬拉(P<0.05)。结论:随站姿间距增大,股内侧肌、股外侧肌、胫骨前肌的激活程度随之增高,内侧腓肠肌降低,膝关节屈曲力矩和内收力矩随之增高。The purpose of this study is to compare the muscle activity characteristics and knee torque of deadlift techniques with shoulder width ratio of 1,1.5,and 2.Methods:With research methods such as literature review,experimentation and mathematical statistics,eight Qualisys600 series infrared high-speed cameras,one AMTI-0.5m force measuring table,DELSY surface electromyography signal and sensor and QTM motion capture system collected the relevant data of 8 subjects at 8RM intensity,and used Opensim,MATLAB and SPSS for data processing and statistical processing.Results:The activation degree of medial gastrocnemius muscle was significantly higher than that of 1.5 times shoulder width(P<0.05),and the activation degree of lateral femoris muscle,medial femoris muscle and tibialis anterior muscle was significantly lower than that of 1.5 times shoulder width(P<0.05).The activation degree of the medial gastnemius muscle in 1.5 times shoulder width deadlift technique was significantly greater than that in 2 times shoulder width deadlift technique(P<0.05),and the activation degree of the lateral femoris muscle,medial femoris muscle and tibialis anterior muscle was significantly less than that in 2 times shoulder width(P<0.05).The knee flexion torque and adductive torque at 2 times shoulder width were significantly greater than that in 1.5 times shoulder width hard pull technique(P<0.05).The flexion moment and adduction moment at 1.5 times shoulder width were significantly greater than those at the same shoulder width(P<0.05).Conclusion:With the increase of standing distance,the activation degree of medial femoris muscle,lateral femoris muscle and tibialis anterior muscle increased,the medial gastrocnemius muscle decreased,the flexion moment and adduction moment of knee joint increased.

关 键 词：硬拉 相扑硬拉 肌肉激活 膝关节力矩 

分 类 号：G804[文化科学—运动人体科学]