实用医学杂志 ›› 2024, Vol. 40 ›› Issue (10): 1376-1381.doi: 10.3969/j.issn.1006-5725.2024.10.008

• 临床研究 • 上一篇    下一篇

拇外翻老年人坐立过程中的肌肉协同特征分析

刘燕燕1,钱蕾2,刘瑞平3,欧阳钧2(),刘刚1()   

  1. 1.南方医科大学南方医院康复理疗科 (广州 510515 )
    2.南方医科大学基础医学院人体解剖学教研室,广东省数字医学与生物力学重点实验室 (广州 510515 )
    3.中山大学深圳校区医学院解剖学系 (广东 深圳 518107 )
  • 收稿日期:2023-12-29 出版日期:2024-05-25 发布日期:2024-05-21
  • 通讯作者: 欧阳钧,刘刚 E-mail:jouyang@126.com;lg2781@smu.edu.cn
  • 基金资助:
    国家自然科学基金项目(82274619);广东省自然科学基金项目(2021A1515010877);广州市基础与应用基础研究项目(2023A04J1968)

Characterization of muscle synergy during sitting and standing in older adults with hallux valgus

Yanyan LIU1,Lei QIAN2,Ruiping LIU3,Jun OUYANG2(),Gang. LIU1()   

  1. *.Department of Rehabilitation Medicine,Nanfang Hospital,Southern Medical University,Guangzhou 510515,China
  • Received:2023-12-29 Online:2024-05-25 Published:2024-05-21
  • Contact: Jun OUYANG,Gang. LIU E-mail:jouyang@126.com;lg2781@smu.edu.cn

摘要:

目的 通过肌肉协同分析拇外翻老年人坐立(sit-to-stand, STS)过程中神经肌肉控制的改变,从而探讨拇外翻老年人对跌倒的影响。 方法 本研究纳入4组受试者:13例年轻对照组(YC);12例年轻拇外翻组(HVY);14例健康老年对照组(EC);15例老年拇外翻组(HVE)。所有受试者都在无扶手的椅子上完成STS动作,使用非负矩阵分解对肌电图的数据进行整合,以比较YC、HVY、EC和HVE组的肌肉协同作用;采集足底压力(COP),地面反作用力(GRF)和跌倒评分(FES-I)。 结果 与YC组相比,HVY、EC、HVE组在STS准备阶段拇展肌和腓肠肌外侧的相对激活振幅降低;同时EC组、HVE组在STS稳定阶段需要更多的维持躯干和足踝关节稳定性的肌肉激活;HVE组需要更多的大腿肌肉的共收缩来维持膝关节的稳定。HVE组的COP、FES-I比其他各组高(P < 0.05)。 结论 在STS中,健康老年人和拇外翻老年人需要更多的维持躯干和足踝关节稳定性的肌肉激活;拇外翻老年人需要更多的大腿肌肉的共收缩来维持膝关节的稳定;除此之外,拇外翻老年人更容易跌倒。

关键词: 老年拇外翻, 肌肉协同, 坐立运动, 非负矩阵分解

Abstract:

Objective To analyze changes in neuromuscular control during sit-to-stand (STS) in older adults with hallux valgus (HV) through muscle synergy, and thus to explore the effect of falls in older adults with HV. Methods Four groups of subjects were included in this study, 13 young controls (YC); 12 young HVgroup (HVY); 14 healthy elderly controls (EC); and 15 elderly HV group (HVE). All subjects completed the STS maneuver in an armless chair, and EMG data were integrated using non-negative matrix factorization to compare muscle synergies in the YC, HVY, EC, and HVE groups; plantar pressures (COP), ground reaction forces (GRF), and fall scores (FES-I) were collected. Results Compared with YC group, HVY, EC, and HVE groups had lower relative activation amplitude of abductor hallucis and lateral gastrocnemius in STS preparation phase; meanwhile, EC and HVE groups needed more muscle activation to maintain stability of trunk and foot-ankle joints in STS stabilization phase; and HVE group needed more co-contractions of thigh muscles to maintain stability of the knee joint. The COP, FES-I of HVE group was higher than that of the other groups (P < 0.05). Conclusion In STS, healthy older adults and older adults with HV required more muscle activation to maintain trunk and ankle stability; older adults with HV required more co-contraction of the thigh muscles to maintain knee stability; in addition to this, older adults with HV were more prone to falls.

Key words: elderly hallux valgus, muscle synergy, sit-to-stand exercise, nonnegative matrix factorization

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