TY JOUR TI DEVELOPMENT OFPHYSICAL FITNESS OF STUDENTS BY THE MEANS OF COMPLEX EXERCISES FROM CROSSFIT KW physical qualities KW health KW crossfit KW complex exercises KW working capacity KW physical culture KW general physical fitness JO Scientific notes of P. F. Lesgaft University AU Ziambetov, V.Y. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft