00863naa#a2200217#i#450# EN\\bibl\123444 20260706045957.1 1994-4683 20230731b2023####ek#y0engy0150####ca RU THE IMPORTANCE OF RELAXATION TECHNIQUES TO IMPROVE ATHLETIC PERFORMANCE AS EXEMPLIFIED BY RUGBY PLAYERS Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 2 с. Journal article local Психологические исследования, опыты, эксперименты, тесты, измерения. 159.9.072 Grinchenko V S Ibragimov V R Lukashevich R V Fomichev V D Petrenko Yana Sergeevna uchzapiski.lesgaft.spb.ru