00592naa#a2200169#i#450# EN\\bibl\116675 20260319062036.4 2221-3260 20260131b2026####ek#y0engy0150####ca RU The modern fitness industry market in Russia: from producing fitness services to achieving strategic development goals Journal article Yaroslavl Yaroslavl State Technical University 2026 15 с. Journal article local Golovchanskaya Elena Eduardovna Rad'ko Mariya Aleksandrovna ystu.editorum.ru