“…By substantiating the study of natural antioxidants as ergogenic agents, we started from the mechanism of regulation of a blood turnover in skeletal muscles and their saturation with oxygen through positive changes in the structure and the functional state of erythrocytes. The owned data on the modelling influence on membrane damage due to the action of oxidative stress under physical loads, which were obtained in a quantum-chemical model, and experimental studies (Gunina et al, 2013) were confirmed by the results of subsequent studies in vivo by the author Oliynyk, Gunina, 2008). It was established that the improvement of cellular structural-functional state, in particular, erythrocyte membranes is accompanied by an increase of the indicators of general and special work abilities of athletes, which coincides with the presence of interrelations between the pharmacological efficiency of antioxidative preparations and their ability to stimulate the physical workability and durability of athletes (Teległów et al, 2011).…”