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

doi:10.3390/diagnostics11081318

	Muscle Synergy of Lower Limb Motion in Subjects with and without Knee Pathology
	Chen, Jingcheng 1,2; Sun, Yining 1,2; Sun, Shaoming 1,2
刊名	DIAGNOSTICS
	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
DOI	10.3390/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.
资助项目	Anhui Provincial Key Research and Development Plan[202004a07020037] ; National Key R&D Program of China[2018YFC2001304]
WOS关键词	ACTIVITY RECOGNITION ; SEMG ; ELECTROMYOGRAPHY ; CLASSIFICATION ; WALKING ; POSTURE ; LEVEL
WOS研究方向	General & Internal Medicine
语种	英语
出版者	MDPI
WOS记录号	WOS:000688997300001
资助机构	Anhui Provincial Key Research and Development Plan ; National Key R&D Program of China
内容类型	期刊论文
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).