RESUMEN
The impact of an aerobic exercise on serum lipid profile, apolipoproteins A-1 and B and lipid peroxides were studied. Forty males [age ranged 19 - 24 years] were selected among healthy non-smoker volunteers. Twenty volunteers performed short term exercise that consisted of 400 m swimming for 15 minutes. The other 20 volunteers performed long-term exercise that consisted of 2 hours swimming for 5 days per week for 6 weeks. In both cases fasting blood samples were drawn before and after the exercise session. Serum was separated from each blood sample and all parameters were analyzed biochemically. Physical exercise may produce favorable metabolic results in lipid and lipoprotein profile. On the other hand, in order to avoid harmful effects of lipid peroxidation, adequate supply of antioxidants [e.g. vitamins A, C and E] is suggested