
Background: The use of Aerobic exercises and weight loss in the post bariatric surgery patients is new, and thus the scientific evidence for its effectiveness needs to be evaluated through a systematic review. Objective: To provide updated evidence-based guidance for Aerobic exercises effects on losing weight of post bariatric surgery patients. Data sources: Pub Med (Medline), Ovid, Physiotherapy Evidence Database (Pedro) ,Google scholar website, Cochrane Central Register of Controlled Trials, Electron library of Cairo University, Science direct website were searched from their earliest records up to August. Data extraction: Template was created to systematically code the demographic, methodological, and miscellaneous variables of each RCT. The Physiotherapy Evidence Database (PEDro) scale was used to evaluate the study quality. Data synthesis: Three studies included 108 participants in total. Best evidence synthesis was applied to summarize the outcomes, which were weight loss, physical fitness, blood pressure and anthropometric measures. Conclusions : However researches on Aerobic exercises is still preliminary , the available data demonstrated the efficacy of Aerobic exercises as a new modality on rehabilitation of weight loss in post bariatric surgery patients with immediate and long term effect on improving physical fitness. Further studies are still needed, especially those involving both physiological and functional evaluations and to cover further domain on weight loss.