Introduction: Low back pain is a common health problem in human beings and about 5 to 15% will develop low back pain (LBP). The clinical Findings of LBP suggest that lumbar mobility is decreased and the recruitment order of core muscles is altered. In the literature, there is no data about the effect of core muscle strengthening in the chronicity (short duration, long duration) of LBP. Aim: To find the effectiveness of lower limb exercises on core muscles in subjects with low back pain in reducing pain and improving functional activities. Methods: 30 patients with low back pain were selected based on the inclusion and exclusion criteria. The subjects were divided into two groups namely Group-A __ampersandsignamp; Group-B with 15 subjects in each group. Group-A subjects received Lower Limb Exercises and Interferential therapy, Group-B subjects received Traditional low back Exercises and Interferential therapy. The outcome measures are the Numerical pain rating scale (NPRS) and Oswestry disability index (ODI). The statistics of this study all the values were tabulated and statistically analyzed by using paired and unpaired t-test. Result: Student t-test analysis revealed a significant difference (p__ampersandsignlt;0.0001) between the two groups in the parameter of the Numerical pain rating scale and Oswestry disability index. Conclusion: This study shows better improvement in improving Core muscles and decreasing pain Lower limb exercises Group A than Traditional low back exercises Group B in low back pain subjects.