Obesity Surgery

, Volume 27, Issue 11, pp 2792–2801 | Cite as

The Effect of Aerobic or Aerobic-Strength Exercise on Body Composition and Functional Capacity in Patients with BMI ≥35 after Bariatric Surgery: a Randomized Control Trial

  • Alireza Hassannejad
  • Alireza Khalaj
  • Mohammad Ali Mansournia
  • Mastaneh Rajabian Tabesh
  • Zahra Alizadeh
Original Contributions



Although previous studies suggested that bariatric surgery is the most effective and sustainable treatment method for morbid obesity in long term, but without changing in lifestyle, maintaining optimal weight loss is almost impossible.


Sixty morbid obese patients (BMI ≥ 35) were evaluated before and after 12 weeks of bariatric surgery in order to compare the impact of two different exercise programs on body composition and functional capacity outcomes. Participants were divided into three groups: aerobic (A), aerobic-strength (AS), and control (C) group. Aerobic capacity was assessed with 12-min walk-run test (12MWRT). One-repetition maximum (1RM) test was performed to evaluation upper limb muscle strength. Lower extremity functional capacity was assessed by sit-to-stand test.


Weight, percent body fat (PBF), and fat mass (FM) reduced greater in the trial groups in comparison to the C group (P < 0.05). In the AS group, the reduction of fat-free mass (FFM) was significantly lower than that in the other groups. Mean changes in 12MWRT increased significantly in the intervention groups. The mean change in the sit-to-stand scores was not statistically significant between the three groups. Comparing the intervention groups showed that mean changes in 1RM variables increased in AS group (P = 0.03).


The data suggests a positive effect of exercise on weight and PBF decrease after surgery, and it leads to significant improvement on aerobic capacity. Moreover, doing resisted exercise caused greater preserving of lean mass.


Bariatric surgery Functional capacity Body composition Exercise Obesity 



This research has been supported by Tehran University of Medical Sciences and Health Services Grant (No: IRCT201512297903N7).

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

Informed Consent

Informed consent was obtained from all individual participants included in the study.

Ethical Approval

All procedures performed in the study were in accordance with the ethical standards of the Tehran University of Medical Sciences (TUMS) and Health Services Grant (No: IRCT201512297903N7) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.


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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  1. 1.Sports Medicine Research CenterTehran university of Medical SciencesTehranIran
  2. 2.Obesity Treatment Center, Department of SurgeryShahed UniversityTehranIslamic Republic of Iran
  3. 3.Department of Epidemiology and Biostatistics, School of Public HealthTehran University of Medical SciencesTehranIran
  4. 4.Department of Sports and Exercise MedicineTehran University of Medical SciencesTehranIran

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