相关实验视频
Updated: Jul 9, 2025

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Lower Limb Biomechanical Analysis of Healthy Participants
Published on: April 15, 2020
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下肢运动,肌肉活动和半坐和步行期间的关节运动之间的相互关系
Umi Matsumura1, Toshiya Tsurusaki1, Rena Ogusu1
1Department of Health Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Heliyon
|November 29, 2023
概括
这项研究表明,四肢运动参数和肌肉活动在和步行过程中显著影响脚和膝关节的关节时刻. 了解这些关系对于有效的治疗干预至关重要.
科学领域:
- 生物力学 生物力学
- 运动学 运动学
- 人类运动科学科学 人类运动科学
背景情况:
- 使用表面电肌图 (sEMG) 估计关节时刻通常依赖于关节角度,可能会忽视四肢运动动态的细微影响.
- 肌肉活动和四肢动力学在坐和步行等功能活动中对关节时刻的具体贡献仍然不完全理解.
研究的目的:
- 调查足关节和膝关节在斜腰平面上的关节时刻的影响因素.
- 量化肌肉激活和四肢运动参数 (角度,角加速) 之间的关系,以及它们对健康成年人半坐和步行的关节时刻的影响.
主要方法:
- 使用惯性测量单位 (IMU) 来捕捉大腿,腿部和脚的倾斜角度和角加速.
- 通过sEMG测量了双腿骨长头,直腿骨,腹肌和前肌的肌肉激活.
- 使用3D运动捕捉系统和强力板量化脚和膝关节的关节时刻.
主要成果:
- 开发了准确的回归模型,用于半坐 (R2=0.92) 和步行 (R2=0.97) 期间的脚关节动量,以及半坐 (R2=0.98) 期间的膝关节动量.
- 在步行过程中,膝关节关节矩的模型准确性较低 (R2=0.63).
- 前和腹肌活动分别是半和步行中的关节运动的主要驱动因素;肌肉活动与膝关节运动的直接相关性较小.
结论:
- 肢体运动参数和特定的肌肉激活是关节关节时刻的关键决定因素.
- 肌肉活动和膝关节关节的时刻之间的关系是复杂的,与坐相比,在步行时不那么直接.
- 调整关节运动的治疗干预措施应考虑四肢动力学,肌肉功能和由此产生的关节运动之间的复杂相互作用.
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