Atividade Eletromiográfica de Estabilizadores de Tronco no Exercício Push-up Isométrico com Vibrações Mecânicas

O objetivo desse estudo foi verificar se a vibração mecânica aumenta a ativação eletromiográfica (EMG) de músculos do core durante o exercício de push-up isométrico. Participaram do estudo 13 homens saudáveis.  As sessões experimentais consistiram na realização de uma repetição de push-up isométrico com angulação dos cotovelos a 90° até a exaustão voluntária. Em uma sessão, o push-up era realizado com as mãos sobre uma plataforma vibratória a uma frequência de 20Hz (V20). Na outra sessão a plataforma permanecia desligada durante a realização do exercício (V00).  Avaliou-se a EMG dos músculos Reto Abdominal (RA) e Longuíssimo (LO). O Root Mean Square (RMS) do RA e do LO foi maior na V20 comparada à V00 (RA: p=0,002; g=0,6; LO: p=0,001; g=1,2), assim como a Frequência Mediana (FMED) (RA: p= 0,004; g=2; LO: p=0,001; g=2). A vibração mecânica alterou as respostas neuromusculares do core, visto que a EMG dos músculos analisados foi maior na sessão V20 comparada à sessão V00.

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