“Functional Indices of Cardiorespiratory System of Pupils of 5–6th Grades in Conditions of Educational Activity of a General School”. Physical education, sport and health culture in modern society, no. 4(32) (December 31, 2015): 102–105. Accessed December 4, 2024. https://sport.vnu.edu.ua/index.php/sport/article/view/83.