TY JOUR TI Assessment of the effect of special load on the functional state of athletes of route hiking by the method of heart rate variability KW hiking KW trekking KW method of heart rate variability KW mid-mountains KW mountains JO Scientific notes of P. F. Lesgaft University AU Yurchak, E.A. AU Shchedrina, Y.A. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft