肥胖对在达到负载的活动中脊柱负荷的影响:一个特定于主体和动力学的肌肉骨建模方法
M Bahramian1, N Arjmand1, M El-Rich2
1Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran.
Journal of biomechanics
|August 26, 2023
概括
肥胖的人在完成任务时经历了显著更高的脊柱负荷. 即使在调整后的姿势,他们的L5-S1压缩和剪切力更大,增加了腰部疾病的风险.
科学领域:
- 生物力学 生物力学
- 肌肉骨系统疾病 肌肉骨系统疾病
- 肥胖问题研究研究
背景情况:
- 肥胖与增加腰部疾病风险有关.
- 之前的模型假设肥胖和正常体重的个体在体力任务期间具有相似的姿势.
- 动力学研究表明,肥胖的人在达到负载的活动中采取不同的姿势.
研究的目的:
- 使用特定主体的肌肉骨建模,比较肥胖和正常体重个体之间的脊柱负荷.
- 调查动力学和体重对L5-S1脊柱负荷在负载达到任务期间的影响.
主要方法:
- 利用对象和动力学特定的肌肉骨建模,对18个人 (9名肥胖者,9名正常体重).
- 模拟了12个静态双手的负载达到活动与不同的手位置和不对称性.
- 整合了个性化的肌肉架构,身体质量分布,以及每个主体和任务的全身动力学.
主要成果:
- 肥胖个体的平均L5-S1压缩 (∼38%) 和剪切负载明显高于正常体重个体.
- 这些增加的负荷在所有测试的手部位置上都被观察到.
- 没有发现体重和手在脊柱负荷上的位置之间有显著的相互作用.
结论:
- 个体特定的动力学并不能完全弥补肥胖个体在达到时增加的脊柱负荷.
- 肥胖症显著提高L5-S1脊柱负荷,无论手在达到活动的位置.
- 仅靠姿势适应就不足以减轻肥胖个体经历的脊柱压力增加.
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