00657naa#a2200181#i#450# EN\\bibl\109655 20251220210816.6 1994-4683 20250913b2025####ek#y0engy0150####ca RU Physical activity and digital addiction: factors determining free time Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2025 3 с. Journal article local Организация досуга. 379.8 Mazurenko Evgeny Anatolyevich Petrenko Yana Sergeevna uchzapiski.lesgaft.spb.ru