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Introduction: From among the core muscles (local and global), transversus abdominis muscle (TrA) is controlled independently as compared to the other trunk muscles. It creates a belt around the abdomen. “Abdominal draw‑in” of the abdomen creates isolated activation of the TrA. Body mass index (BMI) is a measure of body fat based on height and weight. Low endurance of inner core muscles is one of the risk factors for mechanical low back pain. Studies say that high BMI is a risk factor for low back pain. This study aims to assess the TrA muscle endurance and BMI to determine the correlation between the two parameters. Purpose: The objective of the study is to find the correlation between BMI and transverse abdominis endurance among KPGU Physiotherapy College students. Materials and Methods: In this correlation study, 30 college students were selected by convenience sampling method on the basis of inclusion and exclusion criteria. BMI of all participants was calculated. Transverse abdominis muscle endurance was assessed using pressure biofeedback/sphygmomanometer. Results: Results showed a significant negative correlation between TrA endurance and BMI (Pearson’s correlation test; r = −0.45 at P < 0.05). Conclusion: The study concluded that students with higher BMI have low TrA endurance. [ABSTRACT FROM AUTHOR]