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KMID : 1020120070050010059
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Journal of the Korean Academy of Clinical Electrophysiology
2007 Volume.5 No. 1 p.59 ~ p.71
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The Effect of Central Neural Adaptation by Neuromuscular Electrical Stimulation
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Lee Jeong-Woo
Seo Sam-Ki
Yoon Se-Won
Kim Young-Eok
Kim Tae-Youl
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Abstract
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The purpose of this study was to study for the change of neural adaptation by muscle contraction force when neuromuscular electrical stimulation(NMES) was applied. Sixteen subjects(8 male, 8 female) without neuromuscular disease volunteered to participate in the study. All subjects were divided into two subgroups: control(no electrical stimulation) group, NMES(50% maximal voluntary isometric contraction) group. NMES training program was performed in the calf muscle over three times a week for 12 weeks. Before and after experiment MVIC of ankle plantar flexor was measured by use of dynamometer. H-reflex and V-wave in tibial nerve were measured. The following results were obtained; MVIC and V/Mmax ratio were significantly increased in the electrical stimulation groups. However, H/Mmax ratio was not changed. It was closely relationship between MVIC and V/Mmax ratio. In this study, the effect of neural adaptation of central neural adaptation was found in this study. Accordingly, NMES means not only a change of muscle fiber and skeletal muscle volume but also a effect of neural adaptation of central neural drive. Also, it was found that there was closely relationship between MVIC and neural adaptation of central neural drive by NMES
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KEYWORD
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NMES, H-reflex, V-wave, Neural adaptation
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