Methods for dynamic characterization of the major muscles activating the lower limb joints in cycling motion
The functional activation, through electrical stimulation, of the lower limb consisting of several deficient muscles requires well-patterned and coordinated activation of these muscles. This study presents a method for characterizing the parameters of the major muscle groups controlling the ankle an...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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PAGEPress Publications
2014-09-01
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| Series: | European Journal of Translational Myology |
| Subjects: | |
| Online Access: | http://www.pagepressjournals.org/index.php/bam/article/view/3317 |
| _version_ | 1818501766338052096 |
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| author | Navit Roth Avi Wiener Joseph Mizrahi |
| author_facet | Navit Roth Avi Wiener Joseph Mizrahi |
| author_sort | Navit Roth |
| collection | DOAJ |
| description | The functional activation, through electrical stimulation, of the lower limb consisting of several deficient muscles requires well-patterned and coordinated activation of these muscles. This study presents a method for characterizing the parameters of the major muscle groups controlling the ankle and knee joints in cycling motion, the latter having particular significance in the rehabilitation of locomotion. To lower mechanical indeterminacy in the joints the system is reduced by grouping the muscles acting in synergism. The joint torques were calculated by inverse dynamics methods from cycling motion data, including kinematics and foot/pedal reaction loads (forces, moments). The mechanical indeterminacy was resolved by applying optimization criteria and the individual muscle torques were parceled-out from the joint torques. System identification of the individual muscles, part of which being bi-articular, in this non-isometric condition was performed from the relationship between the evaluated force and the measured EMG of each the muscles, using both first and second order linear transfer functions. Feasibility of the presented method was demonstrated through the computation of the coefficients of the muscles involved and validating the results on the experimental data obtained from one subject. |
| first_indexed | 2024-12-10T21:00:45Z |
| format | Article |
| id | doaj.art-5ce58f3373274151a045fdb2040adb54 |
| institution | Directory Open Access Journal |
| issn | 2037-7452 2037-7460 |
| language | English |
| last_indexed | 2024-12-10T21:00:45Z |
| publishDate | 2014-09-01 |
| publisher | PAGEPress Publications |
| record_format | Article |
| series | European Journal of Translational Myology |
| spelling | doaj.art-5ce58f3373274151a045fdb2040adb542022-12-22T01:33:49ZengPAGEPress PublicationsEuropean Journal of Translational Myology2037-74522037-74602014-09-0124310.4081/bam.2014.3.1632666Methods for dynamic characterization of the major muscles activating the lower limb joints in cycling motionNavit Roth0Avi Wiener1Joseph Mizrahi2Department of Biomedical Engineering, Technion, Israel Institute of Technology, HaifaInstitute of Preventive Occupational Medicine, Rambam Medical Center, HaifaDepartment of Biomedical Engineering, Technion, Israel Institute of Technology, HaifaThe functional activation, through electrical stimulation, of the lower limb consisting of several deficient muscles requires well-patterned and coordinated activation of these muscles. This study presents a method for characterizing the parameters of the major muscle groups controlling the ankle and knee joints in cycling motion, the latter having particular significance in the rehabilitation of locomotion. To lower mechanical indeterminacy in the joints the system is reduced by grouping the muscles acting in synergism. The joint torques were calculated by inverse dynamics methods from cycling motion data, including kinematics and foot/pedal reaction loads (forces, moments). The mechanical indeterminacy was resolved by applying optimization criteria and the individual muscle torques were parceled-out from the joint torques. System identification of the individual muscles, part of which being bi-articular, in this non-isometric condition was performed from the relationship between the evaluated force and the measured EMG of each the muscles, using both first and second order linear transfer functions. Feasibility of the presented method was demonstrated through the computation of the coefficients of the muscles involved and validating the results on the experimental data obtained from one subject.http://www.pagepressjournals.org/index.php/bam/article/view/3317Mechanical indeterminacy, Inverse dynamics modeling, Neuro-mechanical model, Cycling motion |
| spellingShingle | Navit Roth Avi Wiener Joseph Mizrahi Methods for dynamic characterization of the major muscles activating the lower limb joints in cycling motion European Journal of Translational Myology Mechanical indeterminacy, Inverse dynamics modeling, Neuro-mechanical model, Cycling motion |
| title | Methods for dynamic characterization of the major muscles activating the lower limb joints in cycling motion |
| title_full | Methods for dynamic characterization of the major muscles activating the lower limb joints in cycling motion |
| title_fullStr | Methods for dynamic characterization of the major muscles activating the lower limb joints in cycling motion |
| title_full_unstemmed | Methods for dynamic characterization of the major muscles activating the lower limb joints in cycling motion |
| title_short | Methods for dynamic characterization of the major muscles activating the lower limb joints in cycling motion |
| title_sort | methods for dynamic characterization of the major muscles activating the lower limb joints in cycling motion |
| topic | Mechanical indeterminacy, Inverse dynamics modeling, Neuro-mechanical model, Cycling motion |
| url | http://www.pagepressjournals.org/index.php/bam/article/view/3317 |
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