%0 Journal Article %T THE IMPORTANCE OF RELAXATION TECHNIQUES TO IMPROVE ATHLETIC PERFORMANCE AS EXEMPLIFIED BY RUGBY PLAYERS %A Grinchenko, V.S. %A Ibragimov, V.R. %A Lukashevich, R.V. %A Fomichev, V.D. %A Petrenko, Y.S. %K rugby, relaxation techniques, stress levels, breathing exercises, visualization, progressive muscle relaxation, performance, cognitive function, injury %J Scientific notes of P. F. Lesgaft University %D 2023 %N 0 %P 2 %I National State University of Physical Education, Sports and Health named after P.F. Lesgaft