title: CHANGES IN HEART RATE AND PERIPHERAL SATURATION IN YOUNG ORIENTEERING ATHLETES WHEN PASSING SPORT DISTANCES OF DIFFERENT DIFFICULTY
abstract: Nowadays, youth sport, on a par with professional sport, imposes stringent requirements for physical and emotional preparation of athletes [1]. Orienteering is no exception, where in the system of preparation of young athletes an important task is to control the formation of adequate adaptive reactions to intensive muscular activity [2]. Running orienteering is characterized by performing maximum and even excessive physical loads during different time intervals, which is associated with signific
journal: Scientific Notes of V I Vernadsky Crimean Federal University Biology Chemistry