
Background: To find out the efficacy of lumbar stabilization exercises by using pressure biofeedback and without pressure biofeedback on trunk angle in middle grade school students with no mechanical low back pain. Method: A total of 90 subjects participated in the study, 45 subjects assigned to each group with a 8 weeks’ intervention protocol. The first group was given lumbar stabilization exercises with pressure biofeedback and other group was given stabilization exercises without pressure biofeedback Results: After intervention in both groups showed improvement in trunk angle (sway back posture) but pressure biofeedback group showed more significant result. Conclusion: Lumbar Stabilization exercises using Pressure biofeedback is an effective way for improving trunk angle in middle grade school students