Preparation of athletes in cyclic sports taking into account the functional state of the external respiratory system and cardiovascular system - Omelchenko, O. S.; Afanasiev, S. M.; Savchenko, V. G.; Mikitchik, O. S.; Lukina, O. V.; Solodka, O. V.; Mischak, O. S. (Pedagogika, psichologika i mediko-biologiceskie problemy fiziceskogo vospitania i sporta, 2019)