Myoelectric Analysis of Dynamic Spring-Loaded Orthosis Training for Individuals With Stroke.
Importance: Poststroke patients have insufficient voluntary movement that is usually accompanied with spasticity, weakness, and abnormal muscle coactivation. A dynamic spring-loaded orthosis was designed to assist patients' finger movements via a steel wire spring, but relevant evidence for muscle c...
| Publicado en: | American Journal of Occupational Therapy Vol. 79; no. 3; pp. 1 - 10 |
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| Autores principales: | , , , |
| Formato: | equations & formulas pictorial research tables/charts randomized controlled trial Journal Article |
| Publicado: |
American Occupational Therapy Association
May/Jun2025
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=184950613&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 184950613 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 02729490 44I jtl: American Journal of Occupational Therapy issn: 02729490 maglogo: N pubinfo: dt: May/Jun2025 vid: 79 iid: 3 pid: 6680 pub: American Occupational Therapy Association place: North Bethesda, Maryland artinfo: ui: 184950613 184950613 184950613 10.5014/ajot.2025.050863 184950613 ppf: 1 ppct: 9 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Myoelectric Analysis of Dynamic Spring-Loaded Orthosis Training for Individuals With Stroke. aug: au: Sun, Jing-Ru Syu, Zih-Ming Ho, Mei-Ta Liu, Chien-Hsiou affil: Jing-Ru Sun, MS, OTR, is Occupational Therapist, Department of Rehabilitation, Fu Jen Catholic University Hospital, New Taipei City, Taiwan. sug: subj: Stroke Rehabilitation Orthoses Design Muscle Strengthening Hand Physiology Movement Muscle Contraction Electromyography Human Taiwan Repeated Measures Rehabilitation Centers Finger Flexor Tendons Physiology Stroke Patients Fingers Physiology Middle Age Aged Male Female Descriptive Statistics Confidence Intervals Randomized Controlled Trials Random Assignment Funding Source Middle Aged: 45-64 years Aged: 65+ years Male Female ab: Importance: Poststroke patients have insufficient voluntary movement that is usually accompanied with spasticity, weakness, and abnormal muscle coactivation. A dynamic spring-loaded orthosis was designed to assist patients' finger movements via a steel wire spring, but relevant evidence for muscle contractions by electromyographic (EMG) activity while the orthosis is worn is lacking. Objective: To explore muscular activity and muscular coactivation during orthosis use. Design: A 2 (orthosis condition: wearing vs. free) × 2 (hand condition: affected side vs. unaffected side) mixed repeated-measures experimental design. Setting: Rehabilitation clinic. Participants: Thirty participants with a diagnosis of stroke were enrolled. Outcome and Measures: The surface EMG of the flexor digitorum superficialis (FDS) and extensor digitorum common (EDC) was recorded in isometric and dynamic tasks. Two dependent variables, normalized electromyography (nEMG) and cocontraction index (CCI), were calculated. Results: The nEMG of the EDC and FDS of the affected side were significantly higher in the wearing condition than in the free condition. The nEMG of the EDC of the affected hand was significantly higher than that of the unaffected hand during dynamic activities but not during isometric activities. CCI was significantly lower on the affected side than on the unaffected side in the wearing condition. Conclusions and Relevance: Muscular contraction significantly increased during dynamic orthosis use. The efficacy of the dynamic orthosis in muscle strength training (concentric resistance training of finger flexors and eccentric resistance training of finger extensors) for stroke patients was supported. Plain-Language Summary: People who have experienced a stroke have insufficient voluntary movement that is usually accompanied by spasticity, weakness, and abnormal muscle coactivation. This study explored muscular activity and muscular coactivation for stroke patients using a dynamic spring-loaded hand orthosis that was designed to assist patients' finger movements via a steel wire spring. The study found that muscular contraction significantly increased when the dynamic orthosis was worn than when it was not worn during grasp-and-release tasks. The study results support the efficacy of the dynamic orthosis in muscle strength training for stroke patients. Dexterous movement improvements will contribute to achieving functional independence for poststroke patients. The study results support the efficacy of a dynamic orthosis in muscle strength training for stroke patients. pubtype: Academic Journal doctype: equations & formulas pictorial research tables/charts randomized controlled trial Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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