Document Detail

Sarcolemmal excitability in myotonic dystrophy: assessment through surface EMG.
MedLine Citation:
PMID:  9533793     Owner:  NLM     Status:  MEDLINE    
A motor point stimulation protocol was carried out on the tibialis anterior of myotonic dystrophy (MyD) patients. The surface myoelectric signal was monitored to record average rectified value (ARV), median frequency of power spectrum (MDF), and conduction velocity (CV) parameters. The ARV curve showed a decreasing trend that reveals a reduction in the M-wave amplitude during stimulation. MDF presented a significant decrement in the first seconds of sustained contraction, probably caused by abnormal lengthening of the depolarization zone. CV was significantly lower in patients, suggesting reduced mean fiber size.
C Chisari; C D'Alessandro; M L Manca; B Rossi
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Muscle & nerve     Volume:  21     ISSN:  0148-639X     ISO Abbreviation:  Muscle Nerve     Publication Date:  1998 Apr 
Date Detail:
Created Date:  1998-04-10     Completed Date:  1998-04-10     Revised Date:  2012-02-22    
Medline Journal Info:
Nlm Unique ID:  7803146     Medline TA:  Muscle Nerve     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  543-6     Citation Subset:  IM; X    
Department of Neuroscience, University of Pisa, Italy.
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MeSH Terms
Leg / physiopathology
Muscle, Skeletal / physiopathology*
Myotonic Dystrophy / physiopathology*
Sarcolemma / physiology*
Grant Support

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