EMG spectral characteristics of masticatory muscles and upper trapezius during maximum voluntary teeth clenching.
J Electromyogr Kinesiol
; 22(1): 103-9, 2012 Feb.
Article
en En
| MEDLINE
| ID: mdl-22100151
ABSTRACT
To assess the surface electromyographic spectral characteristics of masticatory and neck muscles during the performance of maximum voluntary clench (MVC) tasks, 29 healthy young adults (15 men, 14 women, mean age 22years) were examined. Electromyography of masseter, temporalis and upper trapezius muscles was performed during 5-s MVCs either on cotton rolls or in intercuspal position. Using a fast Fourier transform, the median power frequency (MPF) was obtained for the first and last seconds of clench, and compared between sexes, muscles, sides, tests and time intervals using ANOVAs. On average, the MPFs did not differ between sexes or sides (p>0.05), but significant effects of muscle (MPF temporalis larger than masseter, larger than trapezius muscles), test (larger MPFs when clenching in intercuspal position than when clenching on cotton rolls) and time (larger MPFs in the first than in the fifth second of clench) were found. In conclusion, a set of data to characterize the sEMG spectral characteristics of jaw and neck muscles in young adult subjects performing MVC tasks currently in use within the dental field was obtained. Reference values may assist in the assessment of patients with alterations in the cranio-cervical-mandibular system.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Resistencia Física
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Volición
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Fuerza de la Mordida
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Electromiografía
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Masticación
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Músculos Masticadores
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Contracción Muscular
Límite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
J Electromyogr Kinesiol
Asunto de la revista:
FISIOLOGIA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Italia