TY JOUR TI The interrelationship of biomechanical parameters of the elements in the execution techniques of specific types of heptathlon KW athletics heptathlon KW technique KW hurdle race KW long jump KW high jump KW javelin throw KW running KW movement frequency KW movement rhythm KW biomechanical parameters JO Scientific notes of P. F. Lesgaft University AU Gofman, Y.S. AU Zaiko, D.S. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft