42 patients with chronic low back pain participated in a study to determine whether pelvic stabilization during lumbar exercises increases the improvement in pain, disability, range of motion and muscle strength. Patients were separated into three groups; the control group participated in a standard physiotherapy program, the other two groups participated in lumbar strengthening exercises, one group with pelvic stabilization and one without. The results suggest that pelvic stabilization is effective in isolating lumbar muscles to strengthen muscles while simultaneously decreasing pain and disability.