TY JOUR TI The methodology for improving the technical preparedness of 13–14-year-old basketball players, based on the use of a differentiated approach KW technical training KW basketball KW playing position KW differentiated approach KW youth sports JO Scientific notes of P. F. Lesgaft University AU Chen, S.. PY 2025 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft