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Total daily energy expenditure estimated by 24-hour physical activity recalls and doubly labeled water in urban Brazilian adults
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Total daily energy expenditure estimated by 24-hour physical activity recalls and doubly labeled water in urban Brazilian adults
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Journal Article
Total daily energy expenditure estimated by 24-hour physical activity recalls and doubly labeled water in urban Brazilian adults
2025
Overview
The present study assessed whether total daily energy expenditure measured via doubly labeled water (TDEEDLW) could be accurately estimated via 24-hour physical activity recall (24hPAR) and whether different MET estimates impacted TDEE.
The participants comprised a convenience sample of 40 adults (21 women and 19 men) from an urban tropical setting. Laboratory staff took anthropometric measurements, assessed basal metabolic rate via indirect calorimetry, took a baseline urine sample, and administered a DLW dose. Over the following 14 days, participants collected daily urine samples and answered four 24hPARs. The agreement between the measured and estimated methods was investigated.
Means (SD) were: 30.4 (11.0) years for age; 23.1 (2.7) kg/m2 for BMI; and 1.75 (0.26) for physical activity level (TDEEDLW/basal metabolic rate). Data from 24hPARs allowed estimation of TDEE using metabolic equivalent (MET) codes from the Compendium of Physical Activities with its traditional resting MET value or by estimating resting values via sex-specific equations derived from a probability sample of Niteroian adults (METN). Mean TDEEDLW was 2350.8 (527.9) kcal/d and was significantly overestimated by 24hPAR TDEE, when using the traditional MET value, at 2699.7 (537.6) kcal/d (+17.7%, P = 0.0001), and by +26.7% (P < 0.0001) for women only. In contrast, mean 24hPAR TDEE, when using the METN values, did not differ significantly for the entire group (-0.2%, P = 0.9333), neither for women (+5.5%, P = 0.1867), nor for men (–5.6%, P = 0.1516).
Among urban Brazilians, TDEE using sex-specific MET values from relevant population-specific equations can be feasibly and accurately estimated via 24hPAR, and, for men only, when using the conventional MET.
•Total daily energy expenditure was measured by doubly labeled water in a sample of urban Brazilian adults.•24-hour physical activity recall can accurately estimate total daily energy expenditure.•Using the traditional MET value overestimates total daily energy expenditure in women, which makes scientists impart bias into their results.•Using sex-specific MET values accurately estimates total daily energy expenditure.
