“…The study scheme is as follows: the indicators of basic motor functions assessment (IBMFA) were measured before, after 6 months and after the experiment, since the development of motor skills is slow and very difficult, due to the immaturity of nervous processes and the influence of tonic muscle reactions, which is confirmed by many years of scientific practice (Kozyavkin, Shestopalova, & Podkorytov, 1999;Mastyukova, 1991) determination of indicators of joint mobility, muscle tone and strength, speed of hand reaction and manipulative activity was carried out before, after 4 months, after 8 months and after a one-year course of rehabilitation to track the dynamics of development of indicators of the functional state of the musculoskeletal system; assessments of the influence of hydrokinesis therapy on the social-emotional state and activity of playing activity were determined before and after rehabilitation, since the main task of the work is to overcome tonic muscular reactions, pathological attitudes and, on this basis, to form step-by-step motor skills.…”