Obesity is a multifactorial disorder resulting from multivariate etiopathogenic factors. The current lifestyle, causes a gradual increase in weight both in the adult population and in the child population. Among their treatments is bariatric surgery. About which there is little evidence in the literature regarding the health condition developed by patients operated on the same. Objective: To know the influence of a moderate exercise program on health status in patients operated on with bariatric surgery. Methodology: A controlled clinical trial, the population will consist of 32 women and 11 men. Coming from the consultations of bariatric surgery of the Clinic of the Maule - Talca. In the period between March 2017 and March 2018. It will be selected following a non-probabilistic sampling and for convenience. Results Analysis: The variables used in this study will be: cardiovascular function, respiratory function, strength, health perception, anthropometric measures and functional capacity to perform exercises. The Shapiro-Wilk normality test will be performed to determine the distribution of the data to be analyzed. The t-student test or its nonparametric counterpart will be applied to compare two variables. To compare three or more variables, the ANOVA or Kruskal-Wallis test will be used depending on the results of the normality test.

Inclusion Criteria:

• Signed informed consent.
• Do not suffer any absolute contraindication.
• Patients who will undergo bariatric surgery and who reside in the city of Talca.
• Age between 18 - 60 years.
• With weight <180 kilograms.

Exclusion Criteria:

• Medical indication for basic pathologies.
• Post-operative complications.
• Acute angina-like pain during the 6-minute gait test.
• Absence of 2 or more trainings in a row.
• Pregnancy within the first 6 months post-surgery.