步行关节的运动时刻对妊娠段内潜在错误的敏感性惯性参数
Pegah Jamali1, Robert D Catena1
1Maternal Orthopedics and Mechanics (MOM) Lab, Washington State University, Pullman, WA 99164-1410, USA.
Journal of biomechanics
|December 17, 2025
概括
怀孕会导致身体质量变化,但生物力学模型中的关节动量计算不会受到这些变化的显著影响. 这支持在怀孕期间使用一般人体测量模型进行准确的步态分析.
科学领域:
- 生物力学 生物力学
- 人类运动科学科学 人类运动科学
- 怀孕研究 怀孕研究
背景情况:
- 怀孕涉及显著的分段间质量再分配,挑战精确的生物力学建模.
- 估计怀孕期间逆动态的细分质量参数需要仔细考虑生理变化.
研究的目的:
- 评估关节运动时刻计算对怀孕期间细分质量分布在生理学上现实的变化的敏感性.
- 为了确定改变的人类测量输入是否会影响行走期间的部和膝关节关节时刻.
主要方法:
- 在怀孕10周和38周对11名怀孕参与者的长度评估.
- 使用反向动态计算部和膝关节关节的时刻.
- 通过改变干,骨盆,大腿和腿部的质量,同时保持恒定的总体质量,测试五段质量分布场景.
主要成果:
- 关节时刻对细分质量变化的敏感性比膝关节时刻更大.
- 关节时刻的变化在怀孕早期和晚期的摇摆步态阶段更为明显.
- 尽管测试了变化,但灵敏度指标仍然相对较低,这表明对联合时刻计算的影响最小.
结论:
- 在怀孕期间,身体质量分布的现实变化不会显著改变步态关节的时刻.
- 在每个妊娠时间点使用一般人体测量模型是支持在怀孕个体计算联合时刻.
- 生物机械模型可以可靠地估计怀孕期间的关节时刻,尽管人类学变化.
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