女子排球运动员拦网动作下肢骨骼肌肉模型构建与验证

发布时间：2018-07-09 22:51

本文选题：排球 + 拦网　；参考：《中国体育科技》2017年05期

【摘要】：目的:模拟排球拦网起跳的下肢肌肉动作,建立排球拦网动作骨骼肌肉模型,并以表面肌电验证所建立的肌肉骨骼模型。方法:采用3名优秀女子排球运动员为受试者。9台Vicon Mcam2光学摄影机(250 Hz)、2块三维测力板(1000 Hz)和表面肌电同步撷取数据,以Matlab和Anybody软件进行数据处理,并以动力学逆过程算得下肢内在动力学参数。结果:1)排球拦网起跳动作主要作用肌群为股外侧肌、股内侧肌、股直肌、胫前肌和腓肠肌群;2)起跳动作右脚髋关节最大力矩约121.7 N·m,左脚髋关节最大值力矩约83.5 N·m;右脚膝关节最大值力矩约107.9 N·m,左脚膝关节最大值力矩约103.4 N·m;右脚踝关节最大值力矩约78.9 N·m,左脚踝关节最大值力矩约65.6 N·m;3)表面肌电与模拟数值趋势相同的有股二头肌、股内侧肌、股外侧肌、股直肌、腓肠肌外侧头、腓肠肌内侧头,趋势不相同的有半腱肌、半膜肌、胫骨前肌。结论:使用运动学数据驱动肌肉骨骼模型,发现预测值与表面肌电的讯号有密切关系,并验证所建立的骨骼肌肉模型符合实际动作肌肉活化情况。
[Abstract]:Objective: to simulate the lower extremity muscle movement of volleyball blocking action and to establish the skeletal muscle model of volleyball blocking action, and to verify the muscle and bone model by surface electromyography. Methods: three excellent female volleyball players were used as subjects. Two 3D dynamometer plates (1000 Hz) and surface electromyography (EMG) were used to extract the data. The data were processed by Matlab and Anybody software. The intrinsic kinetic parameters of lower extremity were calculated by inverse kinetic process. Results (1) the main muscle groups of the action were lateral femoris, medial femoris, rectus femoris, and rectus femoris. The maximum torque of the right foot hip joint is about 121.7 nm, that of the left foot hip joint is about 83.5 N m, that of the right foot knee joint is about 107.9 N m, that of the left foot knee joint is about 103.4 N m, and that of the right foot ankle joint is about 103.4 N m. The maximum torque of the left ankle joint is about 65.6 N / m ~ (3) the surface electromyography of the biceps femoris is the same as that of the simulated value, and the maximum torque of the left ankle joint is about 78.9 N ~ (m). The medial femoral muscle, lateral femoral muscle, rectus femoris muscle, lateral head of gastrocnemius muscle and medial head of gastrocnemius muscle have different tendency: semitendinosus muscle, hemimembrane muscle, anterior tibial muscle. Conclusion: using kinematics data to drive the musculoskeletal model, it is found that the predicted value is closely related to the signal of surface electromyography, and it is verified that the established skeletal muscle model accords with the actual action muscle activation.
【作者单位】：西南政法大学体育部;
【基金】：重庆市教委科技项目(1400100)
【分类号】：G842

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