Fomicheva, T. V.; Dolgorukova, I. V.; Sulyagina, J. O.; Kryukova, E. M.; Filimonova, N. N.; Zhukova, V. I. Changing National Health Values of Russian Youth Aged 13-17: Motivation for Engagement in Physical Culture and Sports in Regions. ijhs 2021, 5, 542-549.