Background: people those are having sedentary lifestyle and poor posture would land up into weak abdominal muscles which are key spine stabilizers and ultimately it leads to low back pain. Different type of core stability exercises would help in activation of core muscles thus increasing their strength and it also significantly reduces low back pain. Thus current study shows the effect of pelvic bridging exercises on stable surface and unstable surfaces and its effect on strength of transverse abdominis and on low back pain.

Objective: The present study was done to find the effect of pelvic bridging exercises on stable and unstable surface in subjects with low back pain.

Methodology: A sample size of 38 people were calculated. Data were obtained at the beginning and end of the 3-week post-exercise session in both the groups using stable surface for group A and unstable surface for group B.

Results: of the 38 individuals, No significant difference was observed between Group 1 and Group 2 with pretest scores of NPRS (t=-1.0971, p=0.2803) at 5% level of significance. It means that, the mean pretest NPRS scores are similar in Group 1 and Group 2. A significant difference was observed between Group 1 and Group 2 with posttest scores of strength of TrA in mmhg (t=-4.1231, p=0.0002) at 5% level of significance. It means that, the mean post test strength of TrA in mmhg scores is significantly higher in Group 2 as compared to Group 1. Thus bridging exercises on unstable surface found to be effective on increasing strength of TrA significantly.