Changes of electromyographic characteristics of the thoracolumbar paraspinal muscles in adolescents with moderate S-shaped idiopathic scoliosis
10.3969/j.issn.1001-1242.2025.10.005
- VernacularTitle:中度S型青少年特发性脊柱侧凸胸腰背部肌电变化特征
- Author:
Shanshan ZHANG
1
;
Zhenfa ZHANG
;
Yi XU
Author Information
1. 中山大学附属第一医院康复医学科,广东省 广州市,510080
- Publication Type:Journal Article
- Keywords:
moderate adolescent idiopathic scoliosis;
paraspinal muscles;
surface electromyography;
time-fre-quency feature;
Lempel-Ziv complexity
- From:
Chinese Journal of Rehabilitation Medicine
2025;40(10):1482-1489
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the changes in time-frequency and nonlinear indicators of thoracolumbar paraspinal mus-cle electromyographic activity in adolescents with moderate S-type idiopathic scoliosis(AIS)using surface elec-tromyography(sEMG)technology.Method:Nineteen AIS adolescent patients(age:11-17 years old,male:4,female:15)and twenty-one healthy adolescents(age:12-17 years old,male:7,female:14)were separately performed EMG signals of maximum isometric voluntary contraction of the thoracic and lumbar paraspinal muscles.The data were ana-lyzed with independent samples t-test to compare time-frequency changes of EMG activity of the lumbar multif-idus.Two-way repeated measures analysis of variance(ANOVA)was adopted to compare Lempel-Ziv(LZ)complexity values in different states between two groups,with Bonferroni correction for multiple comparisons to assess differences in group means.Result:Compared with healthy controls,patients with moderate,S-shaped AIS showed significant decrease in average EMG(AEMG)and root mean square(RMS)of the concave side thoracic paraspinal muscles,and de-crease median frequency(MF)and mean power frequency(MPF)of the convex side lumbar paraspinal mus-cles in the EMG measurements(P<0.05).There were significant differences among LZ complexity in three states of resting state,maximum strength and strength endurance in AIS(P<0.001).LZ complexity during rest-ing state was significantly lower than that in contraction state(P<0.05).Conclusion:Adolescents with moderate S-shaped exhibit significant abnormalities in the thoracolumbar paraspi-nal muscle electromyographic activity,which serves as important indicators for early functional assessment,treatment evaluation,and disease prognosis.This study provides new insights for enhancing AIS prevention,re-habilitation,and the development of targeted,effective therapeutic strategies.
