Abstract des Autors

The aim of the study was to evaluate the effect of the extract obtained from fruits of Aronia melanocarpa (PA) containing anthocyanin antioxidants on lipid peroxidation in rats subjected to the exhaustive physical exercise. The animals were given PA intragastrically for four consecutive days and then they were forced to run to exhaustion on a treadmill set at the track speed of 28 m per min. Three hours after completion of the exercise lipid peroxidation was assessed by estimating the concentration of the thiobarbituric acid reactive substances (TBARS) in the heart, liver and the red and white parts of the gastrocnemius muscle. In addition, the serum activity of creatine kinase was assessed. The time of the run to exhaustion in the control group of the animals (group C) was similar to that in rats fed the PA (group T). In the two groups of the animals the exercise led to increases in TBARS in all the organs tested except for the red part of gastrocnemius of the T rats. In fact, the level of TBARS in this part of the muscle was significantly (P<0.05) lower in the PA-fed animals than in the control rats. Application of PA did not affect the post-exercise rise in the serum CK activity. The results indicate that PA exhibit a minor antioxidant activity in rats subjected to exhaustive exercise. Verf.-Referat