TY JOUR TI Personal choice of participation in extreme volunteering as a protector of professional deformation KW extreme volunteerism KW personal choice KW complicity KW motivation KW protector KW extremity KW professional deformation JO Vestnik of the St. Petersburg University of the Ministry of Internal Affairs of Russia AU Petrov, V.E. PY 2024 IS 2024 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION