TY JOUR TI EFFECTIVENESS OF THE METHOD OF DIFFERENTIATED DEVELOPMENT OF COORDINATION ABILITIES OF SKI RACERS AGED 10-13 YEARS, HAVING DIFFERENT TYPOLOGICAL PROPERTIES OF THE NERVOUS SYSTEM KW cross-country skiing KW coordination abilities KW typological properties of the nervous system JO Scientific notes of P. F. Lesgaft University AU Sannikova, A.V. AU Bandakov, M.P. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft