00664naa#a2200181#i#450# EN\\bibl\121447 20260507113845.4 1994-4683 20230531b2023####ek#y0engy0150####ca RU CONTENT OF TRAINING LOADS AND THE DYNAMICS OF PHYSICAL FITNESS IN THE ANNUAL CYCLE OF 400 M RUNNERS AT THE STAGE OF SPORTS SPECIALIZATION Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 5 с. Journal article local Бег. Например,. 796.422 uchzapiski.lesgaft.spb.ru