Energy balance
In young military recruits undergoing high-intensity training, daily food intake does not acutely regulate or compensate for daily energy expenditure, as there is no significant day-to-day correlation between the two.
Do not rely on your daily hunger to tell you how much to eat based on your daily activity. In high-activity environments like military training, people do not automatically eat more on heavy training days. To maintain energy balance, you must consciously manage your food intake regardless of day-to-day exercise variations.
Serial auto- and cross-correlations of intake and expenditure were very small and there was no significant relationship between food intake and energy expenditure on the same day.
Why this rating
Large sample size (64 subjects), rigorous measurement methods (IMP, weighed food), but limited to a specific, controlled military population.
Source
Food intake and energy expenditure of army recruits
O. G. Edholm et al. · British Journal Of Nutrition · 1970
DOI 10.1079/bjn19700112
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