Effect of EMG-triggered Electrical Stimulation to Improve Arm Function in Patients with Chronic Hemiplegia.
- Author:
Young Hee LEE
1
;
Yang Tark LEE
;
Kyung Hee PARK
;
Sung Hoon KIM
;
Sang Min JANG
;
Tae Ho KIM
;
Myoung Yae LEE
Author Information
1. Department of Rehabilitation Medicine, Yonsei University Wonju College of Medicine, Korea. lytark@hanmail.net
- Publication Type:Original Article
- Keywords:
EMG-triggered electrical neuromuscular stimulation;
Hemiplegic arm function;
Extensor digitorum communis
- MeSH:
Arm*;
Brain;
Electric Stimulation*;
Hemiplegia*;
Humans;
Metacarpophalangeal Joint;
Muscle Spasticity
- From:Journal of the Korean Academy of Rehabilitation Medicine
2003;27(3):320-328
- CountryRepublic of Korea
- Language:Korean
-
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.
