Stresul oxidativ în efortul fizic intens

Abstract

Evidence of oxidative stress in horses has been described in reports dealing with intense endurance exercise. Oxidation provides energy for maintenance of cellular integrity and functions. Most of the consumed oxygen forms carbon dioxide and water; however, 1 to 2% of the oxygen is not completely reduced and forms reactive oxygen species. In thoroughbred race horses, as in other species subjected to physical activity, there is a rise in the imbalance between free radical production and antioxidant agents which leads to oxidative stress. This stress may produce damage in several bio-molecules creating metabolic alterations affecting physical performance. The aim of this study was to find possible relationships between physical exercise and oxidative stress in trained horses. Keywords: oxidative stress, physical exercise.