Figure 1From: Neuromuscular adaptations after a rehabilitation program in patients with chronic low back pain: case series (uncontrolled longitudinal study) Sample reflex data illustrating how baseline, feed forward and reflex amplitude were determined. Baseline EMG activity was measured 1 second before perturbation during 100 ms. Feedforward activation was determined 50 ms before the perturbation. Reflex amplitude was quantified as the peak magnitude of normalized EMG.Back to article page