We considered the structure of the movement of the segments of the kinematic links of the belt of the lower limbs. Medical and biological studies were conducted in the exercises "flexion, abduction, adduction, extension of the hip while standing." The optimal positions for the manifestations of the muscles of the front, medial, and back groups of the thigh are determined; external muscles of the pelvic girdle of maximum contractile capabilities. This position is the coaxial straight position of the supporting limb and trunk. We determined the initial conditions and determined the basic conditions for the use of complexes of special preventive exercises using special equipment with an unstable surface. An additional, destabilizing position of the body, an external factor - the tension of the rubber cable - was also involved. The specified conditions for the use of exercises were strictly regulated and systematized into complexes, methodically described and differentiated depending on the change in the position and direction of movement of the limb. The exercises considered in this paper can be used as preventive measures for the muscles of the musculoskeletal system and joints. It will also be effective to use the proposed movement elements in the structure of rehabilitation measures for injuries or diseases of the muscles of the lower limbs and back.