Nouwen A, Van Akkerveeken P F, Versloot J M
Department of Psychology, Free University, Amsterdam.
Spine (Phila Pa 1976). 1987 Oct;12(8):777-82. doi: 10.1097/00007632-198710000-00012.
Bilateral paraspinal electromyogram (EMG) at levels L1-L2 and L4-L5, and abdominal EMG of a group of 20 low-back pain patients were compared to those of a group of 20 pain-free controls during flexion, extension, lateral bending to right and left, and rotation to right and left. The results showed no significant left-right differences in paraspinal EMG levels between low-back pain patients and pain-free controls during any of the movements. However, patterns of paraspinal and abdominal EMG were found to be different for low-back pain patients compared to pain-free controls during flexion only.
