Left–Right Differential Erector Spinae Muscles Activation in Prone and Quadruped Positions

Figure 4

—The peak RMS of the electrical activity of the right and left ESL3, EST10, and EST6 muscles is illustrated for the Q-RA and Q-LA. Values are presented as the percent of the maximum RMS displayed during the MVIC test (%MVIC). *P < .05. ESL3, EST10, and EST6 indicate erector spinae muscles at L3, T10, and T6 vertebral levels; MVIC, maximum voluntary isometric contraction; Q-LA, quadruped position with the left arm lift; Q-RA, quadruped position with the right arm lift; RMS, root mean square of the electromyography signals.

Citation: Journal of Applied Biomechanics 39, 1; 10.1123/jab.2022-0047

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