الفهرس 
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Abstract
Purpose: low back pain is a very common condition affecting 60-80% of the worlds’ population at some time in their lives. Lumbar stabilization exercises (LST), has been proven very successful in the treatment of low back pain and reduction in muscle spasm. Although lumbar stabilization exercises, alone is effective in the treatment of low back pain, Low-level laser therapy application to the lumbar para-spinal muscles trigger point has been proven effective in increasing lumbar range of motion and in decreasing lower back pain. The purpose of this study was to determine whether thecombination of lumbar stabilization exercises, and low level laser therapy of the lumbar para-spinals is a more efficient, and possibly effective, treatment protocol in the treatment of low back pain.Methods: Forty-five patients were randomly divided into three groups, group (A)received low-level laser therapy (LLLT) only, group (B) received stabilization exercises only and group (C) received LLLT and stabilization exercises simultaneously. All groups was performed for four weeks, three sessions per week.Pain (Using Visual analogue scale ”VAS”), ROM (Using Schober’s test and Universal Goniometer), muscle function (Using Surface electromyography ”sEMG”) and disability (Using Oswestry disability questionnaire ”ODI”) were measured and compared at 1st and 12th sessions after the treatment in the three groups. Results: There no greater effect of LLLT compared with stabilization exercises therapy for outcome. However, greater effect of LLLT plus stabilization exercises for outcome result. Clinically significant improvements were seen in-group(C) over the course of the study concerning pain, Disability, lumbar range of motion, and improvement of back muscle function. Visual analogue scale and ODI results VAS (p<0.05), and ODI (p<0.01) showed significant difference between the groups, at the 12th session a statistical significant difference between groups A, B and C was noted in flexion range of motion (P<0.001). Significant improvements were noted ingroup(C) in sEMG (p<0.05).with respect to all outcome parameters.Conclusion: Our Results revealed that laser therapy accompanied with lumbar stabilization exercise is effective in improving low back pain and reducing disability