00694naa#a2200169#i#450# EN\\bibl\127989 20260715195011.3 1994-4683 20230228b2023####ek#y0engy0150####ca RU CHRONOLOGY OF A CHANGE IN THE MIDDLE AGE OF ATHLETES OF WINNERS OF THE OLYMPIC GAMES AND WORLD CHAMPIONSHIPS IN RELAY RUNNING Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 3 с. Journal article local четырехэтапный, например,. 796.422.093.344 Sidorenko Aleksandr Sergeevich uchzapiski.lesgaft.spb.ru