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Oxidative stress and antioxidant imbalance due to physical exercise. Abbreviations: XO—xanthine oxidase, eNOS—endothelial nitric oxide synthase, nNOS—neural nitric oxide synthase, NOX2—NADPH oxidase-2, PLA2—phospholipase A2, GSH—glutathione, nrf2—nuclear factor erythroid 2-related factor 2, SOD—superoxide dismutase, CAT—catalase, and GPx—glutathione peroxidase.
