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KMID : 0361420020260040379
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Journal of Korean Academy of Rehabilitation Medicine
2002 Volume.26 No. 4 p.379 ~ p.384
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Stimulation Intensity of Functional Electrical Stimulation on Hemiplegic Upper Extremity
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한태륜/Tai Ryoon Han
임석진/김대열/이규진/Suk Jin Lim/Dai Youl Kim/Kyu Jin Lee
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Abstract
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Objective: This study aimed to assess optimal stimulation intensity and to investigate other variables on functional electrical stimulation (FES) for hemiplegic upper limb.
Method: 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.
Results: 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.
Conclusion: 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.
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