TY CONF TI IMPROVEMENT METHODOLOGY OF PHYSICAL FITNESS AND FUNCTIONAL STATE OF JUNIOR SCHOOLCHILDREN WITH MENTAL RETARDATION THROUGH VESTIBULAR GYMNASTICS KW junior schoolchildren with mental retardation KW vestibular stability KW vestibular gymnastics JO Scientific research of the SCO countries: synergy and integration AU Khaustova, E.G. AU Martynov, A.A. AU Borisenko, E.G. PY 2024 PB AUS PUBLISHERS