EFFECT OF PHYSICAL EFFORT ON RATE OF CARDIAC CONTRACTION TIME, BLOOD FLOW IN CORONARY ARTERY, AND MYOCARDIAL OXYGEN CONSUMPTION AMONG YOUTH SOCCER PLAYERS. PJSSPE [Internet]. 2024 Jun. 15 [cited 2024 Nov. 19];1(6):22-6. Available from: https://proximusjournal.com/index.php/PJSSPE/article/view/85