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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

EMG of upper trapezius - Electrode sites and association with clavicular kinematics

Texto completo
Autor(es):
Zanca, Gisele Garcia [1] ; Oliveira, Ana Beatriz [1] ; Ansanello, Walter [1] ; Barros, Fernanda Cabegi [1] ; Mattiello, Stela Marcia [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Fed Sao Carlos, Dept Phys Therapy, BR-13565905 Sao Carlos, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY; v. 24, n. 6, p. 868-874, DEC 2014.
Citações Web of Science: 8
Resumo

The upper trapezius (UT) has been widely studied and related to alterations in clavicular kinematics in subject with shoulder disorders. However, the most common electrode site used to capture UT EMG is between C7 and the acromion, placing the electrodes over the acromial fibers rather than clavicular ones. Therefore, this study aimed to investigate the relationship between clavicular movements (elevation and retraction) and UT EMG recorded from three electrode sites (traditional electrode positioning and two different sites proposed for clavicular fibers evaluation). Furthermore, the position associated with the highest EMG during maximal isometric voluntary contractions (MVIC), for each electrode site, was determined for normalization purposes. EMG was simultaneously captured in the three electrode sites of 20 healthy subjects, during MVIC at five different positions and during shoulder elevation and abduction in scapular plane. Clavicular kinematics was recorded using an electromagnetic tracking system during the dynamic contractions. Shoulder abduction with head rotation and lateral flexion elicited the highest EMG amplitude on the three electrode sites and was used to normalize the signals. A cross-correlation analysis showed high correlations between all electrode sites and clavicular movements. However, the traditional electrode site seems to record more informative signals in healthy subjects. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 12/05146-0 - Efeitos do Kinesio Taping na cinemática escapular e propriocepção do ombro após fadiga muscular
Beneficiário:Gisele Garcia Zanca
Linha de fomento: Bolsas no Brasil - Doutorado