Osipov, A. Y., Ratmanskaya, T. I., Zemba, E. A., Potop, V., Kudryavtsev, M. D., & Nagovitsyn, R. S. (2021). The impact of the universities closure on physical activity and academic performance in physical education in university students during the COVID-19 pandemic. Physical Education of Students, 25(1), 20–27. https://doi.org/10.15561/20755279.2021.0103