title: Influence of exercise on serum selenium and peroxide reduction system of racing Standardbreds.
abstract: Blood samples were obtained from 45 racing Standardbred horses immediately before and immediately after a training jog at a commercial race track to establish reference values for serum selenium and related values of the peroxide reduction system of racing horses. Hemoglobin, hematocrit, and serum selenium increased significantly (P < 0.001), whereas RBC-reduced glutathione decreased significantly (P < 0.01) immediately after exercise. Glutathione peroxidase and glutathione reductase were not altered by exercise. Serum copper and magnesium were significantly increased (P < 0.01) after exercise.
mesh_terms: D000818:Animals; D003300:Copper / Q000097:blood; D005979:Glutathione Peroxidase / Q000097:blood*; D006736:Horses / Q000097:blood*; D010544:Peroxidases / Q000097:blood*; D005082:Physical Exertion; D012643:Selenium / Q000097:blood*
chemical_list: D003300:Copper; D010544:Peroxidases; D005979:Glutathione Peroxidase; D012643:Selenium