Modeling and Identification of Mechanical and Reflex Properties related to Spasticity in Stroke Patients using Multiple Pendulum Tests
We propose a method for the comprehensive identification of spastic and intrinsic properties of spastic knee joints using multiple pendulum tests. The stretch reflex system was modeled as a velocity feedback loop where the key component was the muscle spindle model generating the afferent signals wi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2011-06-01
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| Series: | Journal of Biomechanical Science and Engineering |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jbse/6/3/6_3_135/_pdf/-char/en |
| _version_ | 1818532377047072768 |
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| author | Chul-Seung KIM Gwang-Moon EOM Kazunori HASE |
| author_facet | Chul-Seung KIM Gwang-Moon EOM Kazunori HASE |
| author_sort | Chul-Seung KIM |
| collection | DOAJ |
| description | We propose a method for the comprehensive identification of spastic and intrinsic properties of spastic knee joints using multiple pendulum tests. The stretch reflex system was modeled as a velocity feedback loop where the key component was the muscle spindle model generating the afferent signals with a constant threshold and gain of the lengthening velocity. For the comprehensive identification, multiple trajectories from one session of pendulum trials with different release angles were used as the reference trajectories that the model must reproduce. The identification was successful based on the results that the identified model represented the various features of pendulum trajectories and the simulated spastic torque closely matched the experimental EMG. The identified velocity threshold showed a remarkable correlation with the EMG duration and peak. The session-based method was effective in the identification of the spastic musculoskeletal system and the velocity threshold of the stretch reflex was suggested as a reliable and intuitive indicator of spastic severity. |
| first_indexed | 2024-12-11T17:44:43Z |
| format | Article |
| id | doaj.art-7c90f992d9304b46a1dd9896011a8d81 |
| institution | Directory Open Access Journal |
| issn | 1880-9863 |
| language | English |
| last_indexed | 2024-12-11T17:44:43Z |
| publishDate | 2011-06-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Biomechanical Science and Engineering |
| spelling | doaj.art-7c90f992d9304b46a1dd9896011a8d812022-12-22T00:56:25ZengThe Japan Society of Mechanical EngineersJournal of Biomechanical Science and Engineering1880-98632011-06-016313514710.1299/jbse.6.135jbseModeling and Identification of Mechanical and Reflex Properties related to Spasticity in Stroke Patients using Multiple Pendulum TestsChul-Seung KIM0Gwang-Moon EOM1Kazunori HASE2Medical device clinical trial center, Yeungnam UniversityDepartment of Biomedical Engineering, Konkuk UniversityDepartment of Mechanical Engineering, Tokyo Metropolitan UniversityWe propose a method for the comprehensive identification of spastic and intrinsic properties of spastic knee joints using multiple pendulum tests. The stretch reflex system was modeled as a velocity feedback loop where the key component was the muscle spindle model generating the afferent signals with a constant threshold and gain of the lengthening velocity. For the comprehensive identification, multiple trajectories from one session of pendulum trials with different release angles were used as the reference trajectories that the model must reproduce. The identification was successful based on the results that the identified model represented the various features of pendulum trajectories and the simulated spastic torque closely matched the experimental EMG. The identified velocity threshold showed a remarkable correlation with the EMG duration and peak. The session-based method was effective in the identification of the spastic musculoskeletal system and the velocity threshold of the stretch reflex was suggested as a reliable and intuitive indicator of spastic severity.https://www.jstage.jst.go.jp/article/jbse/6/3/6_3_135/_pdf/-char/enspasticitypendulum testidentificationstretch reflexmechanical properties |
| spellingShingle | Chul-Seung KIM Gwang-Moon EOM Kazunori HASE Modeling and Identification of Mechanical and Reflex Properties related to Spasticity in Stroke Patients using Multiple Pendulum Tests Journal of Biomechanical Science and Engineering spasticity pendulum test identification stretch reflex mechanical properties |
| title | Modeling and Identification of Mechanical and Reflex Properties related to Spasticity in Stroke Patients using Multiple Pendulum Tests |
| title_full | Modeling and Identification of Mechanical and Reflex Properties related to Spasticity in Stroke Patients using Multiple Pendulum Tests |
| title_fullStr | Modeling and Identification of Mechanical and Reflex Properties related to Spasticity in Stroke Patients using Multiple Pendulum Tests |
| title_full_unstemmed | Modeling and Identification of Mechanical and Reflex Properties related to Spasticity in Stroke Patients using Multiple Pendulum Tests |
| title_short | Modeling and Identification of Mechanical and Reflex Properties related to Spasticity in Stroke Patients using Multiple Pendulum Tests |
| title_sort | modeling and identification of mechanical and reflex properties related to spasticity in stroke patients using multiple pendulum tests |
| topic | spasticity pendulum test identification stretch reflex mechanical properties |
| url | https://www.jstage.jst.go.jp/article/jbse/6/3/6_3_135/_pdf/-char/en |
| work_keys_str_mv | AT chulseungkim modelingandidentificationofmechanicalandreflexpropertiesrelatedtospasticityinstrokepatientsusingmultiplependulumtests AT gwangmooneom modelingandidentificationofmechanicalandreflexpropertiesrelatedtospasticityinstrokepatientsusingmultiplependulumtests AT kazunorihase modelingandidentificationofmechanicalandreflexpropertiesrelatedtospasticityinstrokepatientsusingmultiplependulumtests |