TY JOUR TI STRUCTURE AND CONTENT OFPREACTIVATION TRAINING FOR QUALIFIED FOOTBALL PLAYERS KW special physical training of qualified football players KW speed abilities KW strength abilities KW method of preactivation of muscle activity KW preliminary preactivation KW morphofunctional characteristics of an athlete JO Scientific notes of P. F. Lesgaft University AU Voitsekhovich, A.E. AU Privalov, A.V. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft