ABOUT THE ACCURACY OF IDENTIFYING ENERGY EXPENDITURE BY THE WEARABLE ACTIVITY TRACKER POLAR
An important factor in the training of an athlete is the preparation of a diet. Many athletes use chest straps to measure heart rate for the calculation of energy expenditure. The aim of the study was to compare exercise energy expenditure calculated using a Polar chest heart rate monitor with energy expenditure calculated by a metabolograph. On average, energy expenditure during exercise, according to the Polar chest strap, was 120±20 kcal. The average energy expenditure during exercise, according to the data of the metabolograph, was 108±20 kcal. The average difference was 12%, the difference ranged from 6% to 33%.