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Concurrent Exercise Effects in Post-Bariatric Patients
Sponsor: Universidad Autónoma de Chile
Summary
This study aims to evaluate the effect of a 5-week concurrent exercise program (aerobic and resistance training) on muscle quality, body composition, functional response, and quality of life in individuals undergoing bariatric surgery. This is a single-center, prospective, longitudinal, non-randomized controlled clinical trial with two groups: intervention and control. A total of 84 adults aged 18 to 60 years who have undergone sleeve gastrectomy or gastric bypass and have a medical indication for metabolic rehabilitation will be recruited. The intervention group will complete a supervised concurrent exercise program for 5 weeks, consisting of two in-person sessions per week (10 sessions in total), while the control group will continue with usual care without participating in a structured exercise program. All participants will be assessed at two time points: baseline (postoperative week 4) and 7 weeks after baseline (after 5 weeks of intervention and 1 week of rest). The primary outcome will be muscle quality of the rectus femoris assessed by ultrasound (echo intensity). Secondary outcomes will include body composition (bioelectrical impedance analysis), functional performance (one-minute sit-to-stand test), and quality of life (Moorehead-Ardelt II questionnaire). Additionally, adherence to the exercise program in the intervention group will be evaluated as the percentage of attendance to supervised sessions, and its association with the magnitude of changes in outcomes will be analyzed under a dose-response framework. The results are expected to provide clinically relevant evidence on the effectiveness of exercise in the early postoperative period and to support the optimization of metabolic rehabilitation strategies after bariatric surgery.
Official title: Effect of a Concurrent Exercise Program on Muscle Quality, Body Composition, Functional Response, and Quality of Life in Individuals Undergoing Bariatric Surgery
Key Details
Gender
All
Age Range
18 Years - 60 Years
Study Type
INTERVENTIONAL
Enrollment
84
Start Date
2025-08-11
Completion Date
2028-12-31
Last Updated
2026-05-04
Healthy Volunteers
No
Interventions
Concurrent Exercise Program
Concurrent physical exercise program of 5 weeks combining aerobic and resistance training in individuals undergoing bariatric surgery. The program includes two supervised in-person sessions per week (10 sessions total), each lasting approximately 60 minutes, and one recommended weekly home-based session guided by a prescribed exercise plan. Aerobic exercise is performed at moderate to high intensity, monitored using the Borg Rating of Perceived Exertion scale. Resistance training targets major muscle groups and is prescribed based on an estimated one-repetition maximum (1RM), with progression in volume and intensity according to individual tolerance and safety criteria. The program begins at postoperative week 4. After completing the 5-week intervention, participants undergo a 1-week period without supervised sessions before the post-intervention assessment.
Locations (1)
Clínica BUPA, Santiago
Santiago, Santiago Metropolitan, Chile