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首页> 外文会议>2017 IEEE International Conference on Multisensor Fusion and Integration for Intelligent Systems >Musculoskeletal model of a pregnant woman considering stretched rectus abdominis and co-contraction muscle activation
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Musculoskeletal model of a pregnant woman considering stretched rectus abdominis and co-contraction muscle activation

机译：考虑拉伸的腹直肌和共收缩肌肉激活的孕妇的肌肉骨骼模型

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Weight gain and stretched and weakens abdominal muscles by an enlarging gravid uterus are remarkable features during pregnancy. These changes elicit postural and movement instability and place strain on various body segments. In general, agonist and antagonist muscles of body segments act simultaneously to increase joint stabilization during human movements. The co-contraction might be well observed in pregnant women because of their unstable body joints. Musculoskeletal models are well used to investigate muscle load. However, very few studies have been conducted on the model for pregnant women. Additionally, it is difficult to estimate the co-contraction of muscles by using musculoskeletal models. Therefore, the purpose of this study is to construct musculoskeletal model for pregnant women and estimate co-contraction of trunk muscles. At first, motion analysis of sit-to-stand for a pregnant woman was conducted to obtain the motion and force data for inputting to musculoskeletal model. Simultaneously, muscle activation of rectus abdominis and longissimus were measured by using surface electromyography. On the other hand, the size and mass of body segment of a musculoskeletal model were changed to meet pregnant women. Then, stretched abdominal muscle was modeled. At last, the co-contraction of rectus abdominis and longissimus was estimated from EMG data and joint torque that was calculated from the musculoskeletal model using genetic algorithm.
机译：在妊娠期间，体重增加，妊娠子宫增大而使腹部肌肉伸展和削弱是明显的特征。这些变化引起姿势和运动的不稳定性，并在各个身体部位施加压力。通常，人体节段的激动剂和拮抗肌同时起作用，以增加人体运动过程中的关节稳定性。由于孕妇的身体关节不稳定，可能会在孕妇中出现共收缩现象。肌肉骨骼模型很好地用于研究肌肉负荷。但是，关于孕妇模型的研究很少。另外，难以通过使用肌肉骨骼模型来估计肌肉的共收缩。因此，本研究的目的是为孕妇构建肌肉骨骼模型，并估计躯干肌肉的共收缩。首先，对孕妇的坐姿进行运动分析，以获取运动和力数据，以输入到肌肉骨骼模型中。同时，利用表面肌电图测量腹直肌和最长肌的肌肉活化。另一方面，改变了肌肉骨骼模型的身体节段的大小和质量，以满足孕妇的需要。然后，对伸展的腹部肌肉进行建模。最后，根据肌电图数据和使用遗传算法从肌肉骨骼模型计算得出的关节扭矩，估算了腹直肌和经肌的共收缩。

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