Adaptation rearrangements of heart of young sportsmen depending on the orientation of the training activity Journal title: Slobozans`kij Naukovo-Sportivnij Visnik [Slobozhanskyi Herald of Science and Sport] Authors: Viktor Lastochkin| Сумський державний педагогічний університет ім. А. С. Макаренко, Суми, Україна, A... Subject(s): Education, Sports and Recreation, Rehabilitation, Health and Wellness
