Role of smartphones in increasing physical activity in secondary school students

Adamčák, Štefan, 1971-

Role of smartphones in increasing physical activity in secondary school students / Štefan Adamčák, Pavol Bartík, Michal Marko

In THE SKY - International Journal of Physical Education and Sports Sciences. -- Pandžáb : The University of Lahore, 2021. -- ISSN 2523-9368. -- special issue (2021), pp. 1-10