TY JOUR TI ABOUT THE IMPORTANCE HETEROCHRONICALLYIN SIGNIFICANT IMPROVEMENT OF PROFESSIONAL SKILLS STUDENTS STATE FIRE SERVICE OF EMERGENCY OF RUSSIA KW heterochronicity KW uneven KW professionally significant qualities KW professional-applied physical training KW circuit training KW physical fitness KW physiological indicators JO Psychological and pedagogical problems of human and social security AU Tyshchenko, E.G. AU Sokolowa, E.L. PY 2013 IS 2013 PB Saint-Petersburg University of State Fire Service of Emercom of Russia