 Obesity and arterial hypertension HTN frequently coexist in the same patient. Moreover, the concept that obesity and HTN can be additive in terms of cardiovascular rist is widely accepted. Yet, clinical decision-making in obese patients is complicated by a surprising lack of evidence on the relative importance of obesity and HTN treatment and its efficacy and safety. Lifestyle interventions are the mainstay of obesity management programs and are also advocated in the prevention and treatment of HTN. Physical exercise and diet are recommended to prevent and control obesity and HTN. Aerobic exercise is firmly established as an effective measure for lowering blood pressure and reducing cardiovascular risk. However, there is no agreement about the optimal dose of frequency, intensity, duration and type of exercise. Therefore, the aims of the study are: 1 to assess the changes in selected parameters of blood pressure, cardiorespiratory fitness, body composition and biological markers brought about by a period of 16-week of different aerobic exercise programs with hypocaloric diet for overweight or obesity and primary hypertensive adults, and 2 to examine the effect of six months detraining subsequent to intervention. Secondary objectives are to examine the additional effect of the intervention on physical activity behavior and health-related quality of life. 