TY JOUR TI STUDY OF THE EFFECTIVENESS OF THE USE OF ROPE SKIPPING ELEMENTS AS ONE OF THE FORMS OFPHYSICAL EDUCATION CLASSES IN SECONDARY SCHOOLS KW physical culture KW elements of rope skipping KW schoolchildren KW dynamometry of the right hand KW physical qualities JO Scientific notes of P. F. Lesgaft University AU ZHevak, R.R. AU YAnkevich, I.E. AU Yaroshinskaya, A.P. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft