TY  JOUR
TI  IMPROVING THE EFFECTIVENESS OF THE FIRST SWIMMING MOVEMENTS IN 13-14- YEAR-OLD SWIMMERS
KW  swimming
KW  elements of competitive activity
KW  swimming technique
KW  hypoxia
JO  Scientific notes of P. F. Lesgaft University
AU  Ivchenko, E.V.
AU  Fedorov, P.O.
PY  2023
IS  0
PB  National State University of Physical Education, Sports and Health named after P.F. Lesgaft