TY JOUR TI The need to introduce the coefficient of complexity of technical elements in snowboard competitions in the discipline of big air KW snowboarding KW big air KW sports competitions KW sports result KW sports judge KW sports judging JO Scientific notes of P. F. Lesgaft University AU Vlasenko, P.P. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft