Background: Non-specific low back pain, which excludes identifiable conditions like infections, tumors, or fractures, is a leading cause of disability worldwide.

Objectives: The objective of this study was to analyze and contrast the impacts of two exercises – the Mackenzie back extension exercise and the Pilates pelvic tilt exercise – on pain, disability, and anterior pelvic tilt angle in power loom workers suffering from nonspecific chronic low back pain.

Methodology: It was a randomized clinical trial (RCT). In this study 138 subjects were screened for selection process. Selection was done according to the defined inclusion & exclusion criteria. The sample size of Forty-six loom workers was included in the study. Subjects were divided randomly by lottery method into two groups, group A (McKenzie back extension exercise) and group B (Pilates pelvic tilt exercise), 23 participants in each group. The data was collected with help of three investigations, QUEBEC back pain disability scale for disability and numeric pain rating scale for pain intensity goniometer for anterior pelvic tilt angle. Data analysis  was done through SPSS version 26.

Results: Out of 46 participants, 45.7% were of age between 35-40 years, 54.3%)were between the age of 41-46 years. A statistical significant difference was found in QBPDS, NPRS and pelvic pre and post treatment (P≤0.05) in both groups A and B. Between-group analysis of NPRS, QBPDS and Pelvic angle showed a statistical significant difference (p≤0.05) between group A and B after treatment of 4 weeks.

Conclusion: This study found that both Mackenzie back extension exercise and Pilates pelvic tilt exercise were effective but Pilates pelvic tilt exercise was more effective in improving pain, disability, and anterior pelvic tilt angle in power-loom workers with nonspecific chronic low back pain.

Keywords: McKenzie back extension exercise, Nonspecific chronic low back pain, Pilates, pelvic tilt exercise, QUEBEC back pain disability scale