Effect of EMG-triggered Electrical Stimulation to Improve Arm Function in Patients with Chronic Hemiplegia. |
Lee, Young Hee , Lee, Yang Tark , Park, Kyung Hee , Kim, Sung Hoon , Jang, Sang Min , Kim, Tae Ho , Lee, Myoung Yae |
Department of Rehabilitation Medicine, Yonsei University Wonju College of Medicine, Korea. lytark@hanmail.net |
편마비 환자의 상지 기능회복을 위한 근전도 유발 전기자극 |
이영희, 이양탁, 박경희, 김성훈, 장상민, 김태호, 이명예 |
연세대학교 원주의과대학 재활의학교실 |
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Abstract |
Objective The purpose of this study was to identify the effect of EMG-triggered electrical neuromuscular stimulation for recovery of hemiplegic arm function. Method EMG-triggered electrical stimulation was applied to the extensor digitorum communis (EDC) of 8 chronic hemiplegics who showed no functional changes for more than 3 months. Stimulation was started when the amplitude of processed EMG signal from the same muscle exceeded the preset threshold. The therapeutic effect was evaluated by kinesiologic and clinical methods before and after 4 weeks. Quantitative EMG from EDC, excursion of second metacarpophalangeal joint, and functional measurements were used. We also evaluated cognitive and perceptual effect on recovery of arm function.
Results Subjects treated with EMG-triggered electrical stimulation showed significant gain in amplitude of quantitative EMG and excursion sum during maximal exertion comparing to those of pre-treatment (p<0.05). There was also an decrease of spasticity after treatment. But functional, perceptual and cognitive outcome were not changed significantly (p>0.05).
Conclusion These results suggest that EMG-triggered electrical stimulation might be an effective therapeutic modality to improve motor function of the hemiplegic arm of chronic brain injured patients. (J Korean Acad Rehab Med 2003; 27: 320-328)
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Key Words:
EMG-triggered electrical neuromuscular stimulation, Hemiplegic arm function, Extensor digitorum communis |
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