The book offered to the reader reveals a new approach to solving the problem of improving performance in the “straight split” control exercise. The novelty of the proposed technique lies in the fact that the emphasis is on strength-oriented exercises at medium, large and maximum amplitudes, in contrast to the traditional method of systematic stretching of relaxed muscles. A feature of the proposed methodology is that the task of controlling the weight of the body of the practitioner when performing exercises of varying intensity and direction on medium and large trajectories of leg movements is posed and successfully solved.Recommended for coaches, athletes, as well as everyone involved in physical culture and sports, provided that their classes are accompanied by qualified instructors.