00807naa#a2200193#i#450# EN\\bibl\127895 20260715205219.3 1994-4683 20230228b2023####ek#y0engy0150####ca RU MOTOR PREPAREDNESS AND PHYSICAL PERFORMANCE OF BOYS 10 YEARS LIVING IN THE ULYANOVSK REGION Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 3 с. Journal article local Философские и научно-теоретические основы физической культуры и спорта. 796.011 Blinkov Sergey Nikolaevich Levushkin S P Kosikhin Viktor Petrovich uchzapiski.lesgaft.spb.ru