00755naa#a2200229#i#450# EN\\bibl\118690 20260507220636.4 1994-4683 20230428b2023####ek#y0engy0150####ca RU STUDY OF THE ADAPTIVE CAPABILITIES OF 8-21-YEAR-OLD FOOTBALL PLAYERS IN TERMS OF CARDIAC RHYTHM Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 4 с. Journal article local Футбол. 796.332 ZHigalo V YA Kalenikova N G Syakina G E Boyko G M Golokolenov A V Podsvirov M A uchzapiski.lesgaft.spb.ru