TY JOUR TI SPECIFICITY OFPROFESSIONAL SPORTS ACTIVITY AND HEALTH OF ATHLETES IN MARTIAL ARTS KW professional sports KW increased severity of work KW physical overstrain KW sports injuries KW social protection KW social guarantees KW labor protection of athletes JO Scientific notes of P. F. Lesgaft University AU YAmileva, R.M. AU Kogan, O.S. AU Lifanova, M.V. AU Sakharova, M.L. AU Butov, V.V. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft