上海体育学院学报

2017, (01) 43-49

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基于肌肉-骨骼建模的途中跑大腿后肌损伤时相探讨
The Study on the Injury Phase of Strained Hamstring during Sprint Running Based on Muscle-Skeletal Modeling

钟运健;刘冬梅;裘艺
ZHONG Yunjian; LIU Dongmei; QIU Yi

摘要(Abstract):

目的:分析大腿后肌力量、长度、速度、功率等肌肉拉伤危险因子的交互作用,探讨快速跑时大腿后肌拉伤发生时相的生物力学机制。方法:采集受试者途中跑三维动作解析和测力台数据,建立下肢肌肉-骨骼模型和肌肉功能模型并确立静态优化算法,量化下肢单块肌肉的生物力学数据。结果:大腿后肌在摆动期中间阶段承受高应力且处于高速离心收缩状态,并在此时出现了整个步态中做负功的单位面积功率峰值;大腿后肌长度峰值出现在摆动末期,应力的最大值出现在摆动末期和着地瞬间,且在长度峰值之前的摆动后期,大腿后肌始终表现为离心收缩;大腿后肌在触地初期被极大拉长的状态下,承受高负荷(应力)并高速向心收缩而出现做正功单位面积功率的峰值。结论:摆动期(中间阶段和末期)是大腿后肌群容易拉伤的时相;股二头肌长头是大腿后肌群最易损伤的肌肉。
Objective:To study the interaction of risk factors for muscle injury, including the strength, length, velocity, power of the hamstrings, so as to explore the biomechanical mechanism of the time phase of hamstrings strain during sprint running. Methods:The data of three-dimensional kinematics and force-plate were collected during the running of subjects, and the lower musculoskeletal model along with the muscle function model were set up, then the static optimization algorithm was programmed so that the biomechanical data of single muscle of the lower limb were quantified. Results:The hamstrings sustained the high stress and were in the high-speed centrifugal contraction state during the middle stage of the swinging phase of the hamstrings, and produced the power peak of per area for negative work during the full gait. The length and stress peak of hamstrings appeared at the ending stage of the swinging phase. Besides, under the condition of maximum extension during the initial touchdown, the hamstrings sustained the high stress and did the high-speed concentric contraction, and meanwhile produced the power peak of per area for positive work. The mechanic index of biceps femoris muscle exceeded other muscles remarkably. Conclusions:The middle and ending stage of swinging phase is the likely strain phase for hamstrings; while the biceps femoris muscle is the likely strained one among the muscles of hamstrings.

关键词(KeyWords): 肌肉-骨骼建模;途中跑;大腿后肌;损伤时相
muscle-skeletal modeling;midway running;hamstrings;injury phase

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作者(Author): 钟运健;刘冬梅;裘艺
ZHONG Yunjian; LIU Dongmei; QIU Yi

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