有跌倒史老年人坐立运动过程中的肌肉协同分析

doi:10.13418/j.issn.1001-165x.2024.2.14

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中国临床解剖学杂志 ›› 2024, Vol. 42 ›› Issue (2) : 196-200. DOI: 10.13418/j.issn.1001-165x.2024.2.14

临床生物力学

有跌倒史老年人坐立运动过程中的肌肉协同分析

刘瑞平^1，2，钱蕾²，刘燕燕^2，3，万心竹²，陈春艳²，王镱凝²，于宛琪²，欧阳钧²*

作者信息 +

Muscle synergy analysis during the sit-to-stand movement in elderly individuals with a history of falling

Liu Ruiping^1,2, Qian Lei², Liu Yanyan ^2,3, Wan Xinzhu², Chen Chunyan², Wang Yining², Yu Wanqi², Ouyang Jun²*

Author information +

文章历史 +

摘要

目的探讨有跌倒史的老年人坐立运动中肌肉募集机制是否发生变化。方法招募17名健康年轻人、17名健康老年人及9名有跌倒史的老年人，采集右下肢16块肌肉的表面肌电信号（sEMG）和足底压力中心（COP）轨迹，使用Falls Efficacy Scale-International（FES-I）评估跌倒风险，通过非负矩阵分解（NNMF）提取肌肉协同。结果 3组在肌肉协同数量上无显著差异。有跌倒史老年人坐立运动初期，提前激活腘绳肌和踝关节跖屈肌，在运动的后期，这种提前激活转变为额外的肌肉活动，与健康组形成对比。此外，COP偏移量和FES-I评分显著增加，指示运动稳定性不足。结论坐立运动中有跌倒史老年人腘绳肌和踝关节跖屈肌的异常激活可能影响下肢稳定和肌肉募集策略的改变。

Abstract

Objective To explore the change of muscle recruitment mechanisms during sit-to-stand (STS) movements in elderly individuals with a history of falls. Methods A total of 17 healthy young adults, 17 healthy elderly adults, and 9 elderly individuals with a history of falls were recruited. Surface electromyography (sEMG) signals and the trajectory of the center of pressure (COP) from 16 muscles of the right lower limb were collected. Falls Efficacy Scale-International (FES-I) was used to assess fall risk, and muscle synergies were extracted by non-negative matrix factorization (NNMF). Results There was no significant difference in the number of muscle synergies among the three groups. In the elderly individuals with a history of falls, early activation of the hamstring and ankle plantar flexors at the beginning of sit-to-stand movement was transformed into additional muscle activity at the later stage of movement, in contrast to the healthy group. Furthermore, COP offsets and FES-I scores were significantly increased, indicating a lack of movement stability. Conclusions Abnormal activation of hamstrings and ankle dorsiflexion in elderly individuals with a history of falls during STS movements may affect lower limb stability and changes in muscle recruitment strategies.

导出引用

刘瑞平, 钱蕾, 刘燕燕, 万心竹, 陈春艳, 王镱凝, 于宛琪, 欧阳钧. 有跌倒史老年人坐立运动过程中的肌肉协同分析[J]. 中国临床解剖学杂志. 2024, 42(2): 196-200 https://doi.org/10.13418/j.issn.1001-165x.2024.2.14

Liu Ruiping, Qian Lei, Liu Yanyan, Wan Xinzhu, Chen Chunyan, Wang Yining, Yu Wanqi, Ouyang Jun. Muscle synergy analysis during the sit-to-stand movement in elderly individuals with a history of falling[J]. Chinese Journal of Clinical Anatomy. 2024, 42(2): 196-200 https://doi.org/10.13418/j.issn.1001-165x.2024.2.14

中图分类号： R318.01

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