00784naa#a2200193#i#450# EN\\bibl\111796 20260114183712.3 1994-4683 20250913b2025####ek#y0engy0150####ca RU On the question of early sports specialization Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2025 4 с. Journal article local Философские и научно-теоретические основы физической культуры и спорта. 796.011 Savinkova Ol'ga Nikolaevna Razvorotneva Olesya Aleksandrovna Semenov Evgeniy Nikolaevich uchzapiski.lesgaft.spb.ru