Standardization of the Electromyographic Signal Through the Maximum Isometric Voluntary Contraction

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...

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Bibliographic Details
Published in:Cranio 2011-01, Vol.29 (1), p.23-31
Main Authors: Luís Botelho, André, Henrique Umeda Gentil, Flávio, Sforza, Chiarella, Antonio Moreira Rodrigues da Silva, Marco
Format: Article
Language:English
Subjects:
Adolescent
Adult
Dental Occlusion, Centric
Dentistry
Diagnosis
Electromyography
Electromyography - methods
Electromyography - standards
Electromyography - statistics & numerical data
Female
Humans
Isometric Contraction - physiology
Male
Masseter Muscle - physiology
Masticatory Muscles - physiology
Muscles
Physiological aspects
Posture
Reference Standards
Reproducibility of Results
Temporal Muscle - physiology
Temporomandibular joint disorders
Time Factors
Young Adult
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Summary: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.
ISSN:0886-9634
2151-0903
DOI:10.1179/crn.2011.005