Objective: The objective of this study was to analyze the influence of aerobic exercise on body composition and aerobic capacity of a sample of older, sedentary adults with obesity rates by three different models of intervention (recommendation, prescription at home and monitoring). Material and Methods: A total of 76older adults with a mean age 67.1+/-1.2years, sedentary, with a BMI> 30 kg/m2 were randomized in to four groups: Control (CON) recommendation (REC), prescription home (PRES) and monitoring in a sports center (MON). The same program of aerobic exercise for groups of home and sports center for 24 weeks, 3 days a week was developed. It was determined before and after the intervention BMI, WaistHip-index (ICC), the% fat (Sigma folds) and aerobic capacity (T6M) throughout the sample. Results: MON and PRES groups showed significant improvements in the ICC, Sigma folds and T 6M variables, not the case in HMI. However the MON group presented significant differences from group PRES between-group analysis (p <0.001). The recommendation did not get positive effects. Conclusion: Monitoring is the most effective exercise programs in adults with obesity methodology. However the exercise prescription at home since early intervention is an important approach for people with physical and/ or psychological reasons such as obesity cannot access the sports centers to participate in activities led by a monitor. Unknowns of aerobic exercise are cleared in the home that are of great impact for social policies regarding the health of the elderly population.