BLOOD-PLATELET FUNCTION IN HEALTHY-INDIVIDUALS OF DIFFERENT AGES - EFFECTS OF EXERCISE AND EXERCISE CONDITIONING

The influence of age, physical conditioning and physical exercise on p latelet function on human being is still controversial, The aim of our study were to evaluate the effect of physical exercise on platelet ac tivation measured by beta-thromboglobulin (beta-TG) levels and the num ber of platelets in sedentary and athlete subjects of different ages, and also to investigate the response of these parameters during the pe riod of recover inmediately after a bicycle exercise test. Our results show differences in platelet count and beta-TG levels among the exper imental groups studied, in basal conditions, in response to the exerci se test and during postexercise period, These results seem to indicate that regardless age, regular physical exercise diminish age negative effects on platelet aggregation.