Determinação do limiar de fadiga eletromiográfico obtido por protocolo fatigante e protocolo fixo de 30 segundos para o músculo longuí­ssimo do tórax

Autores

  • Adalgiso Coscrato Cardozo UNIFESP

DOI:

https://doi.org/10.33233/fb.v10i5.1555

Resumo

O presente estudo tem por objetivo comparar o limiar de fadiga eletromiográfico (EMGLF) do músculo longuí­ssimo do tórax obtido durante exercí­cio isométrico fatigante com o limiar obtido durante os primeiros 30 segundos do teste. Participaram deste estudo 20 voluntários do gênero masculino. Para a captação dos sinais eletromiográficos foram utilizados eletrodos de superfí­cie bipolares passivos de Ag/AgCl dispostos sobre os músculos longuí­ssimo do tórax direito e esquerdo, no ní­vel da vértebra L1 a 3 cm lateralmente, com distância inter-eletrodos de 3 cm. Os resultados demonstraram não haver diferenças significativas entre os limiares, indicando que é possí­vel a identificação do EMGLF pelo protocolo de 30 segundos para o músculo longuí­ssimo do tórax. Desta forma, futuros estudos devem ser realizados sobre este protocolo para avaliar indiví­duos portadores de dor lombar para verificar se esta otimização minimizaria as interferências de fatores subjetivos.

Palavras-chave: biomecânica, eletromiografia, coluna, limiar de fadiga, eletromiográfico.

Biografia do Autor

Adalgiso Coscrato Cardozo, UNIFESP

D.Sc.,  Professor, Laboratório de Biomecânica, Departamento de Ciências da Saúde, UNIFESP, Baixada Santista

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2017-12-16

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