Effects of exercise intensity on lymphocyte H₂O₂production and antioxidant defences in soccer players

Abstract

Exercise intensity affects the lymphocyte and neutrophil oxidant/antioxidant balance, but only exercise of high intensity induces lymphocyte oxidative damage.

Investigations on the antifatigue and antihypoxic effects of Paecilomyces hepiali extract

“…Cordyceps sinensis scavenges ROS, superoxide anions and hydroxyl radicals by inhibiting malondialdehyde formation (30). In high intensity or exhaustive exercise, the overproduction of ROS is observed (31). Supporting endogenous antioxidant systems with additional oral antioxidants has been demonstrated to prevent or reduce oxidative stress, decrease muscle damage and improve exercise performance (32).…”

Effect of Isotonic Exercises on Antioxidant and Free Radical Status in Healthy Adults

“…There are several studies which indicate that an increase in free radical production especially in active skeletal muscles. [12][13][14] Sureda et al [15] found an increased Malondialdehyde due to oxidative stress in lymphocytes after a single bout of intense exercise. Similarly Ajmani et al [16] noted increased membrane rigidity in erythrocytes after strenuous exercise because of oxidative stress.…”

Blueberries extract supplementation improves physical performance and decreases oxidative stress in mice

“…However, intense physical exercise can increase oxygen consumption by up to 10-to 20-fold over resting levels to meet energy demands, and oxygen uptake in active skeletal muscle increase 100-to 200-fold (Sureda et al, 2009). Increased oxygen uptake during exercise is accompanied by an elevation in reactive oxygen species (ROS), and ROS are harmful to cells, mainly because they injure lipids, proteins and nucleic acids, which leads to structural and functional impairments (Duthie et al, 1990;Mantle and Preedy, 1999;Alessio et al, 2000;Jackson, 2005).…”