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Transcranial magnetic stimulation with the maximum voluntary muscle contraction facilitates motor neuron excitability and muscle force.
MedLine Citation:
PMID:  22548169     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Three trials of transcranial magnetic stimulation (TMS) during the maximum voluntary muscle contraction (MVC) were repeated at 15-minute intervals for 1 hour to examine the effects on motor evoked potentials (MEPs) in the digital muscles and pinching muscle force before and after 4 high-intensity TMSs (test 1 condition) or sham TMS (test 2 condition) with MVC. Under the placebo condition, real TMS with MVC was administered only before and 1 hour after the sham TMS with MVC. Magnetic stimulation at the foramen magnum level (FMS) with MVC was performed by the same protocol as that for the test 2 condition. As a result, MEP sizes in the digital muscles significantly increased after TMS with MVC under test conditions compared with the placebo conditions (P < 0.05). Pinching muscle force was significantly larger 45 minutes and 1 hour after TMS with MVC under the test conditions than under the placebo condition (P < 0.05). FMS significantly decreased MEP amplitudes 60 minutes after the sham TMS with MVC (P < 0.005). The present results suggest that intermittently repeated TMS with MVC facilitates motor neuron excitabilities and muscle force. However, further studies are needed to confirm the effects of TMS with MVC and its mechanism.
Authors:
Tetsuo Touge; Yoshiteru Urai; Kazuyo Ikeda; Kodai Kume; Kazushi Deguchi
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Publication Detail:
Type:  Journal Article     Date:  2012-03-20
Journal Detail:
Title:  Neurology research international     Volume:  2012     ISSN:  2090-1860     ISO Abbreviation:  Neurol Res Int     Publication Date:  2012  
Date Detail:
Created Date:  2012-05-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101543314     Medline TA:  Neurol Res Int     Country:  United States    
Other Details:
Languages:  eng     Pagination:  847634     Citation Subset:  -    
Affiliation:
Health Sciences, School of Nursing, Faculty of Medicine, Kagawa University, Kagawa 761-0793, Japan.
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