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Muscle Synergy of Lower Limb Motion in Subjects with and without Knee Pathology

文献类型：期刊论文

作者Chen, Jingcheng1,2; Sun, Yining1,2; Sun, Shaoming1,2
刊名DIAGNOSTICS
出版日期2021-08-01
卷号11
关键词knee pathology lower limb motions surface electromyography muscle synergy analysis non-negative matrix factorization feature selection
DOI10.3390/diagnostics11081318
通讯作者Sun, Shaoming(smsun@iim.ac.cn)
英文摘要Surface electromyography (sEMG) has great potential in investigating the neuromuscular mechanism for knee pathology. However, due to the complex nature of neural control in lower limb motions and the divergences in subjects' health and habits, it is difficult to directly use the raw sEMG signals to establish a robust sEMG analysis system. To solve this, muscle synergy analysis based on non-negative matrix factorization (NMF) of sEMG is carried out in this manuscript. The similarities of muscle synergy of subjects with and without knee pathology performing three different lower limb motions are calculated. Based on that, we have designed a classification method for motion recognition and knee pathology diagnosis. First, raw sEMG segments are preprocessed and then decomposed to muscle synergy matrices by NMF. Then, a two-stage feature selection method is executed to reduce the dimension of feature sets extracted from aforementioned matrices. Finally, the random forest classifier is adopted to identify motions or diagnose knee pathology. The study was conducted on an open dataset of 11 healthy subjects and 11 patients. Results show that the NMF-based sEMG classifier can achieve good performance in lower limb motion recognition, and is also an attractive solution for clinical application of knee pathology diagnosis.
WOS关键词ACTIVITY RECOGNITION ; SEMG ; ELECTROMYOGRAPHY ; CLASSIFICATION ; WALKING ; POSTURE ; LEVEL
资助项目Anhui Provincial Key Research and Development Plan[202004a07020037] ; National Key R&D Program of China[2018YFC2001304]
WOS研究方向General & Internal Medicine
语种英语
WOS记录号WOS:000688997300001
出版者MDPI
资助机构Anhui Provincial Key Research and Development Plan ; National Key R&D Program of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/125171]  
专题中国科学院合肥物质科学研究院
通讯作者Sun, Shaoming
作者单位1.Chinese Acad Sci, Inst Intelligent Machines, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Jingcheng,Sun, Yining,Sun, Shaoming. Muscle Synergy of Lower Limb Motion in Subjects with and without Knee Pathology[J]. DIAGNOSTICS,2021,11.
APA Chen, Jingcheng,Sun, Yining,&Sun, Shaoming.(2021).Muscle Synergy of Lower Limb Motion in Subjects with and without Knee Pathology.DIAGNOSTICS,11.
MLA Chen, Jingcheng,et al."Muscle Synergy of Lower Limb Motion in Subjects with and without Knee Pathology".DIAGNOSTICS 11(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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