תזונה ותוספים Validity of Resting Energy Expenditure Predictive Equations before and after an Energ

[Mike Bikov]

PLoS One. 2011;6(9):e23759. Epub 2011 Sep 6.

Validity of Resting Energy Expenditure Predictive Equations before and after an Energy-Restricted Diet Intervention in Obese Women.

Ruiz JR, Ortega FB, Rodríguez G, Alkorta P, Labayen I.

Source
Department of Physical Education and Sport, School of Physical Activity and Sport Sciences, University of Granada, Granada, Spain.

Abstract

BACKGROUND:
We investigated the validity of REE predictive equations before and after 12-week energy-restricted diet intervention in Spanish obese (30 kg/m(2)>BMI<40 kg/m(2)) women.

METHODS:
We measured REE (indirect calorimetry), body weight, height, and fat mass (FM) and fat free mass (FFM, dual X-ray absorptiometry) in 86 obese Caucasian premenopausal women aged 36.7±7.2 y, before and after (n = 78 women) the intervention. We investigated the accuracy of ten REE predictive equations using weight, height, age, FFM and FM.

RESULTS:
At baseline, the most accurate equation was the Mifflin et al. (Am J Clin Nutr 1990; 51: 241-247) when using weight (bias:-0.2%, P = 0.982), 74% of accurate predictions. This level of accuracy was not reached after the diet intervention (24% accurate prediction). After the intervention, the lowest bias was found with the Owen et al. (Am J Clin Nutr 1986; 44: 1-19) equation when using weight (bias:-1.7%, P = 0.044), 81% accurate prediction, yet it provided 53% accurate predictions at baseline.

CONCLUSIONS:
There is a wide variation in the accuracy of REE predictive equations before and after weight loss in non-morbid obese women. The results acquire especial relevance in the context of the challenging weight regain phenomenon for the overweight/obese population.

PMID: 21909404 [PubMed - in process] PMCID: PMC3167807
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Full Text:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3167807/pdf/pone.0023759.pdf

 

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