Subject-specific thumb muscle activity during functional tasks of daily life
| Autor: | Gertjan Deleu, Evie Vereecke, Priscilla D'Agostino, Faes Kerkhof |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Adult
medicine.medical_specialty Adolescent Biophysics Neuroscience (miscellaneous) Isometric exercise Osteoarthritis Thumb Young Adult 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Isometric Contraction Activities of Daily Living medicine Humans Muscle activity Muscle Skeletal 030222 orthopedics Hand Strength Electromyography business.industry Subject specific medicine.disease body regions Task (computing) medicine.anatomical_structure Motor unit recruitment Physical therapy Female Neurology (clinical) medicine.symptom business Psychomotor Performance psychological phenomena and processes 030217 neurology & neurosurgery Muscle contraction |
| Popis: | BACKGROUND: The trapeziometacarpal joint is subjected to high compressive forces during powerful pinch and grasp tasks due to muscle loading. In addition, muscle contraction is important for stability of the joint. The aim of the present study is to explore if different muscle activation patterns can be found between three functional tasks. METHODS: Isometric forces and fine-wire electromyographic (fEMG) activity produced by three intrinsic and four extrinsic thumb muscles were measured in 10 healthy female volunteers. The participants performed isometric contractions in a lateral key pinch, a power grasp and a jar twist task. The tasks were executed with and without EMG recording to verify if electrode placement influenced force production. RESULTS: A subject-specific muscle recruitment was found which remained largely unchanged across tasks. Extrinsic thumb muscles were significantly more active than intrinsic muscles in all tasks. Insertion of the fEMG electrodes decreased force production significantly in all tasks. CONCLUSION: The thumb muscles display a high variability in muscle activity during functional tasks of daily life. The results of this study suggest that to produce a substantial amount of force, a well-integrated, but subject-specific, co-contraction between the intrinsic and extrinsic thumb muscles is necessary. publisher: Elsevier articletitle: Subject-specific thumb muscle activity during functional tasks of daily life journaltitle: Journal of Electromyography and Kinesiology articlelink: http://dx.doi.org/10.1016/j.jelekin.2016.06.009 content_type: article copyright: © 2016 Elsevier Ltd. All rights reserved. ispartof: Journal of Electromyography and Kinesiology vol:30 pages:131-136 ispartof: location:England status: published |
| Databáze: | OpenAIRE |
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