00734naa#a2200181#i#450# EN\\bibl\127965 20260715143924.3 1994-4683 20230228b2023####ek#y0engy0150####ca RU OPTIMIZATION OF THE CONTROL OF THE TRAINING PROCESS OF HIGHLY QUALIFIED SWIMMERS BASED ON THE ANALYSIS OF HEART RATE VARIABILITY INDICATORS Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 5 с. Journal article local Плавание без вспомогательных средств. 797.21 Pankov D A CHernogorov D N uchzapiski.lesgaft.spb.ru