00745naa#a2200193#i#450# EN\\bibl\111419 20260114222647.3 1994-4683 20250913b2025####ek#y0engy0150####ca RU Integrated approach to the development of active flexibility in girls aged 6-7 years engaged in artistic gymnastics Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2025 5 с. Journal article local Художественная гимнастика. 796.412.2 Germanov Gennadiy Nikolaevich Cherenkova Ekaterina Sergeevna uchzapiski.lesgaft.spb.ru