Fig. 6From: A model for evaluation of the electric activity and oxygenation in the erector spinae muscle during isometric loading adapted for spine patientsRelative change in RMS expressed as percent over time. Left (EMG4) and right side (EMG3), pre- and postoperatively. All three loading blocks, Ito 1, 2, and 3. Values presented are mean, error bars 95% CIBack to article page