The high-tech and low-tech exercise groups produced statistically significant (p<0.05) increases in lumbar flexion, extension ROM, and lifting capability, but there were no statistically significant improvements in the Oswestry disability questionnaire scores for these groups. There were no statistically significant increases in the scores for the physical agents and joint manipulation groups compared to the control group for either lumbar flexion, extension ROM, or lifting capability nor were there statistically significant decreases in their disability scores.