The effect of muscle activity on the blood neutrophil system in rats

: The effect of muscular activity (MA) on the amount of different classes of leukocytes in the blood, concentrations of myeloperoxidase and lysozyme in the blood plasma, and neutrophils and phagocytosis parameters of these cells, were studied in rats. The MA resulted in a decrease of marker proteins (myeloperoxidase and lysozyme) concentration in neutrophils and an increase of their concentrations in the blood plasma. The neutrophil phagocytic activity decreased. The restoration of myeloperoxidase content in neutrophils took place within 12 hrs after MA, phagocytic activity restored by the 3rd day. The mechanisms of change of the neutrophil functional activity under the MA influence are discussed.