Comparison of Actual and Predicted Resting Energy Expenditure in Skilled Endurance Athletes

Abstract

Connection of the publication with planned research works.The work was performed within the framework of the research topics "Improvement of the system for assessing the functional capabilities of qualified athletes" (state registration number 0120U102907), "Control and correction of metabolism of qualified athletes under conditions of intense physical activity" (state registration number 0120U103004), "Influence of endogenous and exogenous factors on the course of adaptive reactions of the body to physical activity of different intensity" (state registration number 0121U108187).Introduction.High-performance sports are characterised by high energy expenditure for physical activity. In qualified athletes, they often amount to 1000-2000 kcal, and during intensive training and competition activities, daily energy expenditure can exceed 10000 kcal [1,2]. Therefore, it is extremely important to compensate for energy expenditure through a diet with adequate calorie content, as rational nutrition is a basic factor in ensuring recovery processes.Accurate determination of daily energy expenditure requires expensive equipment. It is difficult from an organisational point of view, so in sports nutrition, as in clinical nutrition, it is common to determine energy expenditure by calculation (using physical activity coefficients or metabolic equivalents of activity) [1]. In this case, the basic parameter is resting energy expenditure (REE), which is the minimum amount of energy required to ensure the vital functions of the body (respiration, blood circulation, excretory functions, muscle tone, nervous and endocrine system, etc.) [3].