The paper substantiates auxiliary means usage in preparation of highly skilled athletes. Their usage should be strictly regulated according to character, direction, structure and way of interaction with athlete body, and based on P.K. Anokhin’s fundamental theory about human locomotor functional system. The technology of their interaction with athlete body is substantiated as well: the main functional (limiting) link of motor stereotype should be determined after biomechanical analysis of special sports exercise. The abovementioned means should be used in the structure of competitive exercise performance, thus providing the impact of facilitating character upon the main functional chain of locomotor action. Such scheme may provide optimizing reorganization of motor stereotype of locomotor functional system and prevent overexertion within components and systems of energy supply of sports exercise the main functional link. Optimization criteria are enhancement of synergic and reduction of antagonistic neuromuscular manifestations of the motor action, intensification of relaxation mechanisms in the course of sports exercise performance and increase of sensitivity of proprioceptive system of athlete body.