Heba Essam Adel creator preparation. Amel Mohamed Yousef thesis advisor. Amr Hazem Abbassy thesis advisor. Khadyga Sayed Abd ElAziz thesis advisor. text theses ua 2022 monographic eng ara 108 p. : charts, facsimiles ; 25 cm. CD Background: Low back pain (LBP) is a common musculoskeletal problem post nataly which is generally severe enough to interfere with daily life, causing limitations in performance and productivity at work, increased sick leave, high rates of functional disability, and increased seeking of treatment for symptom relief. Objective: The purpose of the study was to investigate the effect of reducing abdominal obesity on LBP in post-natal women. Patients and Methods: Forty obese post-natal women complained from LBP, their age ranged from (25-35) years and body mass index (BMI) didn’t exceed 40 kg/m² were participated in this study. They were randomly distributed into two equal groups; group (A) received focused ultrasound cavitation (FUSC) and low caloric diet in addition to performing abdominal strengthening and posterior pelvic tilt exercises and group (B) performed the same exercises as group (A) for one month. Assessment of both groups (A&B) was done before and after 4weeks of treatment by using visual analogue scale (VAS) to assess pain intensity, algometer to assess the pain threshold at the most tender points at back, Oswestry disability questionnaire for functional disability and obesity by weight and waist circumference. Results: showed that there was a significant decrease in mean values of weight, waist circumference, pain threshold for most tender points in lumbar region, pain intensity and functional disability post treatment in group (A & B) except weight and waist circumference showed nonsignificant difference in group (B), but the results of group (A) were superior to that of group (B) when comparing between groups post treatment. Conclusion: It can be concluded that combination of FUSC, diet and exercise is considered as a safe and effective adjuvant to weight loss and reducing of back pain for abdominal obese post-natal women specialized by Heba Essam Adel Supervised Prof. Dr. Khadyga Sayed Abd ElAziz, Prof.Dr.Amel Mohamed Yousef, Prof.Dr.Amr Hazem Abbassy. Thesis (Ph.D.) - Cairo University - Faculty of Physical Therapy - Department of Physical Therapy for Woman's Health Bibliography: p. 88-112. Issued also as CD Text in English and abstract in Arabic & English. Reducing cavitation low back pain post-natal 610 EG-GiCUC 220706 20260523150418.0 eng