00842naa#a2200205#i#450# EN\\bibl\106757 20251223111239.2 1994-4683 20251218b2025####ek#y0engy0150####ca RU Conditions for maintaining balance during acrobatic support with object manipulation in pair and group exercises of rhythmic gymnastics Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2025 7 с. Journal article local Художественная гимнастика. 796.412.2 Medvedeva Elena Nikolaevna Suprun Aleksandra Aleksandrovna Skrzhinskiy Aleksandr Maksimovich Pimenova Lyudmila Georgievna uchzapiski.lesgaft.spb.ru