1. Institute of Management and Social Technologies, Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg, Russian Federation
2. Department of Sport Management and Economy, Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg, Russian Federation
3. Department of Theory and Methods of Preschool and Primary Education, Yelabuzhsky Institute of Kazan (Privolzhsky) Federal University, Еlabuga, Russian Federation
4. Department of Mathematics and Computer Science, Technical Institute (branch) North-Eastern Federal University named after M.K. Ammosov in Neryungri, Neryungri, Russian Federation