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Journal of the Korean Academy of Rehabilitation Medicine 2002;26(4):379-384.
Stimulation Intensity of Functional Electrical Stimulation on Hemiplegic Upper Extremity.
Han, Tai Ryoon , Lim, Suk Jin , Kim, Dai Youl , Lee, Kyu Jin
1Department of Rehabilitation Medicine, Seoul National University College of Medicine, Korea.
2Department of Biomechanical Engineering, Seoul National University College of Medicine, Korea.
편마비 환자의 상지에 대한 기능적 전기 자극의 강도
한태륜, 임석진, 김대열, 이규진1
서울대학교 의과대학 재활의학교실, 1의공학교실

This study aimed to assess optimal stimulation intensity and to investigate other variables on functional electrical stimulation (FES) for hemiplegic upper limb.

We divided hemiplegic subjects into two groups, acute (n=28) and chronic (n=18), and control subjects into old (n=26) and young (n=27). Electrical stimulation was performed on the forearm of both sides in hemiplegic patients and of the nondominant side in normal controls. The stimulation site that aimed at open hand motion was targeted to the extensor digitorum and extensor pollicis brevis muscles. We measured the peak to peak amount of current and skin impedance while making hand extension.

The acute and chronic hemiplegic groups required a greater current than the control groups (p<0.01). The hemiplegic side required a greater current than the non- hemiplegic side (p<0.001). There was no significant difference of current amount between the acute and chronic hemiplegic groups. The current amount was significantly correlated with subject's age (p=0.001). No difference of skin impedance was found among any of the groups.

Irrespective of disease duration on hemiplegia, a greater current is required in the hemiplegic upper limb than in the normal upper limb. Age was an important factor in determining stimulation intensity. (J Korean Acad Rehab Med 2002; 26: 379-384)

Key Words: Functional electrical stimulation, Hemiplegia, Stimulation intensity


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