We have now examined the platelet indices -platelet count (PC), mean platelet volume (MPV), platelet dimensional vidth (PDW)- in two groups of highly-trained athletes before and after exercise. The PC increased significantly after the biathlon race, whereas during less strenuous exercise, such as the runners'basal training, PC did not change. The exercise-induced thrombocytosis did not depend on hemoconcentration since the hematocrit values in our biathletes did not significantly change after the effort. No platelet indices correlated with Km/h. Thus according to previous reports the thrombocytosis due to platelet release would be more appreciable in short and stressful exercising than in prolonged and regular activities, such as in training.On the other hand both after racing and after training a significant decrease of MPVs was associated vith raised PDW; furthermore a lowered MPV vas observed even after the first short-term effort (cycling) of the biathlon race. These findings would suggest that the variation of platelet size,observed in all the exercising athletes, may be due to the release of platelets from those seats of pooling (splenic and non-splenic) previously reported by others.
Effects of exercise on platelet indices in well-trained athletes
RICCI, Giorgio;
1989
Abstract
We have now examined the platelet indices -platelet count (PC), mean platelet volume (MPV), platelet dimensional vidth (PDW)- in two groups of highly-trained athletes before and after exercise. The PC increased significantly after the biathlon race, whereas during less strenuous exercise, such as the runners'basal training, PC did not change. The exercise-induced thrombocytosis did not depend on hemoconcentration since the hematocrit values in our biathletes did not significantly change after the effort. No platelet indices correlated with Km/h. Thus according to previous reports the thrombocytosis due to platelet release would be more appreciable in short and stressful exercising than in prolonged and regular activities, such as in training.On the other hand both after racing and after training a significant decrease of MPVs was associated vith raised PDW; furthermore a lowered MPV vas observed even after the first short-term effort (cycling) of the biathlon race. These findings would suggest that the variation of platelet size,observed in all the exercising athletes, may be due to the release of platelets from those seats of pooling (splenic and non-splenic) previously reported by others.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
