[The role of physical activity in the prevention of certain internal diseases].

During the last decades the physical activity drastically was reduced in daily life. Epidemiological and prospective studies suggest that regular physical activity has beneficial effects in prevention of non-insulin dependent diabetes mellitus, and has protective benefit in control of risk factors in coronary artery disease. It increases cardiovascular functional capacity, decreases myocardial oxygen demand and has a blood-pressure lowering effect. In the prevention of obesity together with a proper diet, regular training is the most important factor influencing life-style. Some studies indicate that exercise might promote protection against colon, breast and lung cancers. To maintain good health aerobic exercise with a moderate intensity on a regular basis is recommended.