Speed-adaptive control of functional electrical stimulation for dropfoot correction
Abstract Background Functional electrical stimulation is an important therapy technique for dropfoot correction. In order to achieve natural control, the parameter setting of FES should be associated with the activation of the tibialis anterior. Methods This study recruited nine healthy subjects and...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2018-11-01
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| Series: | Journal of NeuroEngineering and Rehabilitation |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s12984-018-0448-x |
| _version_ | 1818027739010039808 |
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| author | Guangtao Chen Le Ma Rong Song Le Li Xiaoyun Wang Kaiyu Tong |
| author_facet | Guangtao Chen Le Ma Rong Song Le Li Xiaoyun Wang Kaiyu Tong |
| author_sort | Guangtao Chen |
| collection | DOAJ |
| description | Abstract Background Functional electrical stimulation is an important therapy technique for dropfoot correction. In order to achieve natural control, the parameter setting of FES should be associated with the activation of the tibialis anterior. Methods This study recruited nine healthy subjects and investigated the relations of walking speed with the onset timing and duration of tibialis anterior activation. Linear models were built for the walking speed with respect to these two parameters. Based on these models, the speed-adaptive onset timing and duration were applied in FES-assisted walking for nine healthy subjects and ten subjects with dropfoot. The kinematic performance of FES-assisted walking triggered by speed-adaptive stimulation were compared with those triggered by the heel-off event, and no-stimulation walking at different walking speeds. Results Higher ankle dorsiflexion angle was observed in heel-off stimulation and speed-adaptive stimulation conditions than that in no-stimulation walking condition at all the speeds. For subjects with stroke, the ankle plantarflexion angle in speed-adaptive stimulation condition was similar to that in no-stimulation walking condition, and it was significant larger than that in heel-off stimulation condition at all speeds. Conclusions The improvement in ankle dorsiflexion without worsening ankle plantarflexion in speed-adaptive stimulation condition could be attributed to the appropriate stimulation timing and duration. These results provide evidence that the proposed stimulation system with speed-related parameters is more physiologically appropriate in dropfoot correction, and it may have great potential value in future clinical applications. Trial registration Medical Ethics Committee of Guangdong Work Injury Rehabilitation Center, AF/SC-07/2016.22. Registered 26 May 2016. |
| first_indexed | 2024-12-10T04:52:41Z |
| format | Article |
| id | doaj.art-c438b8df30764bb5b78ddca40789fd97 |
| institution | Directory Open Access Journal |
| issn | 1743-0003 |
| language | English |
| last_indexed | 2024-12-10T04:52:41Z |
| publishDate | 2018-11-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of NeuroEngineering and Rehabilitation |
| spelling | doaj.art-c438b8df30764bb5b78ddca40789fd972022-12-22T02:01:35ZengBMCJournal of NeuroEngineering and Rehabilitation1743-00032018-11-0115111110.1186/s12984-018-0448-xSpeed-adaptive control of functional electrical stimulation for dropfoot correctionGuangtao Chen0Le Ma1Rong Song2Le Li3Xiaoyun Wang4Kaiyu Tong5Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Engineering, Sun Yat-sen UniversityKey Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Engineering, Sun Yat-sen UniversityKey Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Engineering, Sun Yat-sen UniversityDepartment of Rehabilitation Medicine, Sun Yat-sen First Affiliated Hospital, Sun Yat-sen UniversityGuangdong Work Injury Rehabilitation CenterDepartment of Biomedical Engineering, the Chinese University of Hong KongAbstract Background Functional electrical stimulation is an important therapy technique for dropfoot correction. In order to achieve natural control, the parameter setting of FES should be associated with the activation of the tibialis anterior. Methods This study recruited nine healthy subjects and investigated the relations of walking speed with the onset timing and duration of tibialis anterior activation. Linear models were built for the walking speed with respect to these two parameters. Based on these models, the speed-adaptive onset timing and duration were applied in FES-assisted walking for nine healthy subjects and ten subjects with dropfoot. The kinematic performance of FES-assisted walking triggered by speed-adaptive stimulation were compared with those triggered by the heel-off event, and no-stimulation walking at different walking speeds. Results Higher ankle dorsiflexion angle was observed in heel-off stimulation and speed-adaptive stimulation conditions than that in no-stimulation walking condition at all the speeds. For subjects with stroke, the ankle plantarflexion angle in speed-adaptive stimulation condition was similar to that in no-stimulation walking condition, and it was significant larger than that in heel-off stimulation condition at all speeds. Conclusions The improvement in ankle dorsiflexion without worsening ankle plantarflexion in speed-adaptive stimulation condition could be attributed to the appropriate stimulation timing and duration. These results provide evidence that the proposed stimulation system with speed-related parameters is more physiologically appropriate in dropfoot correction, and it may have great potential value in future clinical applications. Trial registration Medical Ethics Committee of Guangdong Work Injury Rehabilitation Center, AF/SC-07/2016.22. Registered 26 May 2016.http://link.springer.com/article/10.1186/s12984-018-0448-xElectromyographyWalking speedDropfootFunctional electrical stimulation |
| spellingShingle | Guangtao Chen Le Ma Rong Song Le Li Xiaoyun Wang Kaiyu Tong Speed-adaptive control of functional electrical stimulation for dropfoot correction Journal of NeuroEngineering and Rehabilitation Electromyography Walking speed Dropfoot Functional electrical stimulation |
| title | Speed-adaptive control of functional electrical stimulation for dropfoot correction |
| title_full | Speed-adaptive control of functional electrical stimulation for dropfoot correction |
| title_fullStr | Speed-adaptive control of functional electrical stimulation for dropfoot correction |
| title_full_unstemmed | Speed-adaptive control of functional electrical stimulation for dropfoot correction |
| title_short | Speed-adaptive control of functional electrical stimulation for dropfoot correction |
| title_sort | speed adaptive control of functional electrical stimulation for dropfoot correction |
| topic | Electromyography Walking speed Dropfoot Functional electrical stimulation |
| url | http://link.springer.com/article/10.1186/s12984-018-0448-x |
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