PRIPREMNOG PERIODA

Although the relationship between exercise and oxidative stress has been intensively investigated for over 3 decades, there remains a lack of empirical data on exercise-induced oxidative stress in athletes engaged in sporting games, spe-cifi cally among the population of elite female athletes. Blood samples were taken from female handball players on the Serbian U20 national team at the beginning and end of a one-month preparatory training period, as well as immedi-ately before and after acute treadmill exercise. Levels of su-peroxide anion radical, hydrogen peroxide, nitric oxide and lipid peroxidation were measured in plasma samples, while levels of reduced glutathione and the activity of superoxide dismutase and catalase were measured in erythrocytes. Both experimental protocols demonstrated signifi cant increases i