Dear colleagues, I am writing an article that compares the measured and predicted resting metabolic rate in elite athletes. However, to define a cutoff point to determine which equation is more accurate, I got myself thoughtful. Initially, I set 5% of the measured RMR, since elite athletes need the most accurate diet prescription possible. However, I do not know if this limit is very restricted considering the clinical applicability of this measure. 5% means ~ 100kcal / day. Do you consider that this amount of "error" already affects the diet prescription or could it be more flexible since the RMR is already an estimate for 24 hours?
Best regards,
Raul
An appropriate estimate of energy needs meeting athletes’ requirements is a prerequisite of health, optimal function, and physical fitness. A daily energy intake that is insufficient or exceeds energy expenditure may adversely affect the athlete’s body composition and function and impair performance. The actual energy requirements of athletes can markedly vary and can be different from the prescribed energy intake. An athlete’s energy requirement should be periodized and personalized to meet training and match demands and objectives. In practice, assessment of athletes’ energy requirements is time-consuming and includes a margin of error, even when using the best techniques. In this context, the available guides provide estimates that contain inherent residual errors. For predicting resting metabolic rate, the reported variation between measured and predicted values vary on average from −5.7% to 14.1%, regardless of age and gender. It is advisable to prescribe an energy estimate that is closest to the measured value.
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