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目的分析人体头部前屈运动过程中头颈部肌群活动特性,探索人体头颈部肌肉疲劳原因。方法基于AnyBody软件建立人体头颈部肌骨模型,以Vicon运动捕捉系统测量数据为输入,对头部前屈运动过程中的肌力进行仿真,并结合文献数据进行分析。结果颈后肌群在头部前屈运动中起主要作用。在头部前屈45%和75%行程位置肌力分配模式不同。肌力对前屈角位移的积分WM一定程度上反映了肌肉的疲劳特性,其中颈半棘肌和多裂肌在头部前屈运动过程中WM最大,容易出现疲劳。结论本文建立的头颈部肌骨模型可为分析人体运动状态下肌肉分析提供技术平台。
Objective To analyze the characteristics of head and neck muscles during head flexion and to explore the causes of head and neck muscle fatigue. Methods The head and neck musculoskeletal model was established based on AnyBody software. The Vicon motion capture system was used as the input to simulate the muscle force in the process of head flexion, and the data were analyzed. Results The posterior cervical muscle group played a major role in the head flexion movement. In the head flexion 45% and 75% of the stroke location muscle distribution mode. The integral of muscular force to the angle of displacement of forearm WM reflects the fatigue characteristics of the muscle to a certain degree. Among them, the semispinal muscle and the multifidus of the neck are the largest WM in the process of head flexion movement, which is prone to fatigue. Conclusion The model of head and neck musculature established in this paper can provide a technical platform for the analysis of muscle analysis under human motion.