Characterization of muscle synergy during sitting and standing in older adults with hallux valgus
10.3969/j.issn.1006-5725.2024.10.008
- VernacularTitle:拇外翻老年人坐立过程中的肌肉协同特征分析
- Author:
Yanyan LIU
1
;
Lei QIAN
;
Ruiping LIU
;
Jun OUYANG
;
Gang LIU
Author Information
1. 南方医科大学南方医院康复理疗科(广州 510515)
- Keywords:
elderly hallux valgus;
muscle synergy;
sit-to-stand exercise;
nonnegative matrix factor-ization
- From:
The Journal of Practical Medicine
2024;40(10):1376-1381
- CountryChina
- Language:Chinese
-
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 stabi-lization 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.
