TY CONF TI DIGITAL MECHANISMS FOR ACCOUNTING FOR PHYSICAL ACTIVITY OF THE POPULATION WHO ARE UNPROFESSIONALLY ENGAGED IN SPORTS KW smart sports ground KW digital methods of accounting for amateur athletes KW smart sports KW accounting for the population engaged in sports JO VII All-Russian scientific and practical conference with international participation "Sports Informatics Day" AU gavrilov, n.A. PY 2024 PB Russian Association of Computer Science in Sports