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Updated: Jun 4, 2026

Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation
Published on: September 13, 2015
Standardization of the electromyographic signal through the maximum isometric voluntary contraction
André Luís Botelho1, Flávio Henrique Umeda Gentil, Chiarella Sforza
1Faculty of Odontology of Ribeirão Preto, University of São Paulo, Dept. of Odontology Restoration, Avenida do Café, s/n, Monte Alegre Ribeirão Preto, SP, Brazil. andrebotelho@forp.usp.br
Abstract:
The objective of this study was to analyze the electromyographic (EMG) data, before and after normalization. One hundred (100) normal subjects (with no signs and symptoms of temporomandibular disorders) participated in this study. A surface EMG of the masticatory muscles was performed. Two different tests were performed: maximum voluntary clench (MVC) on cotton rolls and MVC in intercuspal position. The normalization was done using the mean value of the EMG signal of the first examination. The coefficient of variation CV showed lower values for the standardized data. The standardization was effective in reducing the differences between records from the same subject and in different subjects.
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