An approach for improving repeatability and reliability of non-negative matrix factorization for muscle synergy analysis
(2016) In Journal of Electromyography and Kinesiology 26. p.36-43- Abstract
The aim of this study was to evaluate non-negative matrix factorization (NMF) and concatenated NMF (CNMF) to analyze and reliably extract muscle synergies. NMF and CNMF were used to extract knee joint muscle synergies from surface EMGs collected during a weight bearing, force matching task. Repeatability and between subject similarity were evaluated for each method using intra-class correlation coefficients (ICCs). High repeatability was found for CNMF (>0.99; 0.99-1.0) compared to NMF (>0.26; range 0.26-0.98). Reasonable consistency across subjects was improved using the CNMF over the NMF approach. CNMF was found to be a more reliable approach than NMF and suitable for between subject comparison of muscle synergies.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/cea35860-8a6b-42d9-9af1-da853daf2180
- author
- Shourijeh, Mohammad S. ; Flaxman, Teresa E. and Benoit, Daniel L. LU
- publishing date
- 2016-02-01
- type
- Contribution to journal
- publication status
- published
- keywords
- Electromyography, Knee, Muscle synergy, Non-negative matrix factorization, Repeatability, Robustness
- in
- Journal of Electromyography and Kinesiology
- volume
- 26
- pages
- 36 - 43
- publisher
- Elsevier
- external identifiers
-
- pmid:26755163
- scopus:84960195165
- ISSN
- 1050-6411
- DOI
- 10.1016/j.jelekin.2015.12.001
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2015 Elsevier Ltd.
- id
- cea35860-8a6b-42d9-9af1-da853daf2180
- date added to LUP
- 2023-08-24 16:39:34
- date last changed
- 2024-07-28 11:24:54
@article{cea35860-8a6b-42d9-9af1-da853daf2180, abstract = {{<p>The aim of this study was to evaluate non-negative matrix factorization (NMF) and concatenated NMF (CNMF) to analyze and reliably extract muscle synergies. NMF and CNMF were used to extract knee joint muscle synergies from surface EMGs collected during a weight bearing, force matching task. Repeatability and between subject similarity were evaluated for each method using intra-class correlation coefficients (ICCs). High repeatability was found for CNMF (>0.99; 0.99-1.0) compared to NMF (>0.26; range 0.26-0.98). Reasonable consistency across subjects was improved using the CNMF over the NMF approach. CNMF was found to be a more reliable approach than NMF and suitable for between subject comparison of muscle synergies.</p>}}, author = {{Shourijeh, Mohammad S. and Flaxman, Teresa E. and Benoit, Daniel L.}}, issn = {{1050-6411}}, keywords = {{Electromyography; Knee; Muscle synergy; Non-negative matrix factorization; Repeatability; Robustness}}, language = {{eng}}, month = {{02}}, pages = {{36--43}}, publisher = {{Elsevier}}, series = {{Journal of Electromyography and Kinesiology}}, title = {{An approach for improving repeatability and reliability of non-negative matrix factorization for muscle synergy analysis}}, url = {{http://dx.doi.org/10.1016/j.jelekin.2015.12.001}}, doi = {{10.1016/j.jelekin.2015.12.001}}, volume = {{26}}, year = {{2016}}, }