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Table 2 Electrode locations

From: Use of antagonist muscle EMG in the assessment of neuromuscular health of the low back

Muscle Electrode location
Erector spinae 3.5 cm from the midline at the level of L2 and L4 vertebrae
External oblique Approximately 10 cm lateral to umbilicus with an orientation of 45° from vertical
Rectus abdominals 3 cm lateral to the umbilicus