The epidemiological transition shows that since last century there has been a marked proportional decrease in infectious diseases and accelerated proportional growth of chronic disease with a negative emphasis on cardiovascular diseases, different cancers and external causes.
These transition have been modifying morbidity and mortality profiles, making physical activity on the list of priorities of national and international public health once its causally related to the prevention of various chronic diseases.
The promotion of physical activity is complex and the new knowledge produced on its benefits is, until now, usually few to generate great behavioral changes in the population. These changes are difficult due to the multicausality of such behavior, which is closely linked to socioeconomic, environmental, personal and cultural aspects of the population.
The main studies on the epidemiology of physical activity continue to investigate the relationship between sedentary lifestyle, as a risk of factor, or active physically lifestyle as a protective factor for chronic disease as well to the mental health and the intensity of physical activity required to cause association or dose-response relation with the variables.
Social determinants have demonstrated to influence in many health aspects. One of these are physical activity. This way, it is necessary to identify how this interaction occurs and its repercussion in the practice of physical activity to understand how help the behavior´s change to a more active lifestyle once it has been considered a powerful protective factor to diseases, mainly the chronic type.