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Introduction. Resting energy expenditure is an important indicator of metabolic status. The impact of long-term sports activities on resting energy expenditure is not definitively determined. Published results on REE in athletes have significant differences.
Purpose. To examine the resting energy expenditure in skilled athletes and compare it to that of untrained people
Methods. Analysis and generalization of scientific data in the field of research, bioelectrical impedance analysis, indirect calorimetry and statistical data processing.
Results. Resting energy expenditure (REE) in male athletes was 2132.9 ± 339.7 kcal · day − 1. REE is most correlated with body weight (r = 0.77, p <0.05) and lean body mass (LBM) (r = 0.74,
p <0.05)). Analysis of scientific data shows that REE in athletes is not constant and may decrease after a period of intense training. These changes are associated with a decrease in the rate of metabolic reactions and a probable increase in catabolic processes. During intense training, the need for energy increases significantly, and in case of insufficient compensation of energy expenditure from diet, a cascade of metabolic, hormonal and nervous reactions aimed at maintaining homeostasis and energy conservation is provoked.
Originality. Resting energy expenditure and body composition relation was analyzed in skilled athletes and non-athletes.
Conclusion. Resting energy expenditure in male athletes is significantly higher (p <0.05) compared to untrained men (2132.9 ± 339.7 and 1772.1 ± 305.7 kcal · day − 1, respectively). This increase is associated with both an increase in LBM and an increase in its metabolic activity. Among the factors influencing the REE of athletes, the greatest contribution is made by body weight (r = 0.77, p <0.05) and lean body mass (r = 0.74, p <0.05), as well as the intensity of physiological processes. Proactive monitoring of energy consumption and expenditure during intense training periods to compensate for increased energy expenditure can provide more objective control of the athlete's recovery. Therefore, the determination of resting energy expenditure is an informative indicator of metabolic status and can be used in comprehensive monitoring of functional status and recovery of the athlete.
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