Purpose:to study influence of carbohydrate course application on qualified athlete's special workability. Material:workability of cyclic kinds of sports athlete (n=14) was determined before and after gel course application under increasing loads. Results:confident increase of work power was found at threshold of anaerobic metabolism (by 12%). Besides, rising of mechanic effectiveness and economy of muscular work at threshold of anaerobic metabolism and at maximal oxygen consumption was registered. Such results witness about presence of conditions for improvement of muscular energy supply at the account o aerobic component that permits to prolong working time without fatigue. Conclusions:purposefulness of carbohydrate gel application in conditions of physical loads, requiring endurance, has been proved. Its application in athlete's training is recommended for increase of training and competition effectiveness.