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Nutrients 2017, 9(9), 1012; doi:10.3390/nu9091012

Prediction Equations Overestimate the Energy Requirements More for Obesity-Susceptible Individuals

1
Department of Human Nutrition, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
2
Nutrition Society of New Zealand, Whanganui 4543, New Zealand
3
Department of Preventive and Social Medicine, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
4
School of Physical Education, Sport and Exercise Sciences, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
5
Edgar Diabetes and Obesity Research Centre and Department of Medicine, Dunedin School of Medicine, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
*
Author to whom correspondence should be addressed.
Received: 30 June 2017 / Revised: 5 September 2017 / Accepted: 11 September 2017 / Published: 13 September 2017
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Abstract

Predictive equations to estimate resting metabolic rate (RMR) are often used in dietary counseling and by online apps to set energy intake goals for weight loss. It is critical to know whether such equations are appropriate for those susceptible to obesity. We measured RMR by indirect calorimetry after an overnight fast in 26 obesity susceptible (OSI) and 30 obesity resistant (ORI) individuals, identified using a simple 6-item screening tool. Predicted RMR was calculated using the FAO/WHO/UNU (Food and Agricultural Organisation/World Health Organisation/United Nations University), Oxford and Miflin-St Jeor equations. Absolute measured RMR did not differ significantly between OSI versus ORI (6339 vs. 5893 kJ·d−1, p = 0.313). All three prediction equations over-estimated RMR for both OSI and ORI when measured RMR was ≤5000 kJ·d−1. For measured RMR ≤7000 kJ·d−1 there was statistically significant evidence that the equations overestimate RMR to a greater extent for those classified as obesity susceptible with biases ranging between around 10% to nearly 30% depending on the equation. The use of prediction equations may overestimate RMR and energy requirements particularly in those who self-identify as being susceptible to obesity, which has implications for effective weight management. View Full-Text
Keywords: obesity resistance; obesity susceptibility; resting metabolic rate; RMR prediction equations; indirect calorimetry obesity resistance; obesity susceptibility; resting metabolic rate; RMR prediction equations; indirect calorimetry
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

McLay-Cooke, R.T.; Gray, A.R.; Jones, L.M.; Taylor, R.W.; Skidmore, P.M.L.; Brown, R.C. Prediction Equations Overestimate the Energy Requirements More for Obesity-Susceptible Individuals. Nutrients 2017, 9, 1012.

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