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[Agreement between measured and calculated by predictive formulas resting energy expenditure in severe and morbid obese women].

Abstract

OBJECTIVE

To compare measured resting energy expenditure (REE) with that predicted by formulas derived from populations with normal weight or obesity and from women with severe and morbid obesity.

MATERIAL AND METHODS

66 women (aged 35.6 +/- 10.3 y and BMI of 44.7 +/- 4.9 kg/m2) were evaluated by indirect calorimetry with a metabolic monitor Deltatrac (Datex Inst., Finland), before undergoing gastric bypass. REE was calculated with the following equations: Harris-Benedict's with both actual and adjusted weight, Ireton-Jones', Mifflin's, and Carrasco's Fast Estimation, which corresponds to 16.2 kcal x kg actual weight.

RESULTS

(mean +/- sd). Measured REE was 1797 +/- 239 kcal/day. All formulas, except Harris-Benedict's with adjusted weight, overestimated REE. The Ireton-Jones' equation presented the greater overestimation (689 +/- 329 kcal/day), whereas Mifflin's equation overestimated REE only by 6 +/- 202 kcal/day. No significant differences were detected between measured and calculated REE by Mifflin's and Carrasco's Fast Estimation. Accuracy (defined as difference between calculated and measured REE within +/- 10%) was greater with Mifflin's equation (68%), followed by Harris-Benedict's with actual weight (64%) and Carrasco's Fast Estimation (61%). By using the Bland-Altman analysis, significant correlations were observed between calculated-measured REE and mean REE (calculated + measured/2) with all equations except Carrasco's Fast Estimation. This means that all but one formula underestimate or overestimate REE depending on the level of measured REE.

CONCLUSION

In severe and morbid obese women, Mifflin's and Carrasco's Fast Estimation equations provided the best performance to estimate REE. Before recommending an equation in an a subset of individuals it is necessary to make previous validation studies to determine that equation with the best predictive power for this particular group of patients.

Authors+Show Affiliations

,

Departamento de Nutrición, Facultad de Medicina, Universidad de Chile.

, , , , , , ,

Source

MeSH

Adult
Algorithms
Basal Metabolism
Body Mass Index
Body Weight
Calorimetry, Indirect
Female
Gastric Bypass
Humans
Obesity
Obesity, Morbid
Predictive Value of Tests
Rest

Pub Type(s)

English Abstract
Journal Article
Research Support, Non-U.S. Gov't

Language

spa

PubMed ID

17650881

Citation

Carrasco, F, et al. "[Agreement Between Measured and Calculated By Predictive Formulas Resting Energy Expenditure in Severe and Morbid Obese Women]." Nutricion Hospitalaria, vol. 22, no. 4, 2007, pp. 410-6.
Carrasco F, Rojas P, Ruz M, et al. [Agreement between measured and calculated by predictive formulas resting energy expenditure in severe and morbid obese women]. Nutr Hosp. 2007;22(4):410-6.
Carrasco, F., Rojas, P., Ruz, M., Rebolledo, A., Mizón, C., Codoceo, J., ... Csendes, A. (2007). [Agreement between measured and calculated by predictive formulas resting energy expenditure in severe and morbid obese women]. Nutricion Hospitalaria, 22(4), pp. 410-6.
Carrasco F, et al. [Agreement Between Measured and Calculated By Predictive Formulas Resting Energy Expenditure in Severe and Morbid Obese Women]. Nutr Hosp. 2007;22(4):410-6. PubMed PMID: 17650881.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Agreement between measured and calculated by predictive formulas resting energy expenditure in severe and morbid obese women]. AU - Carrasco,F, AU - Rojas,P, AU - Ruz,M, AU - Rebolledo,A, AU - Mizón,C, AU - Codoceo,J, AU - Inostroza,J, AU - Papapietro,K, AU - Csendes,A, PY - 2007/7/27/pubmed PY - 2007/9/11/medline PY - 2007/7/27/entrez SP - 410 EP - 6 JF - Nutricion hospitalaria JO - Nutr Hosp VL - 22 IS - 4 N2 - OBJECTIVE: To compare measured resting energy expenditure (REE) with that predicted by formulas derived from populations with normal weight or obesity and from women with severe and morbid obesity. MATERIAL AND METHODS: 66 women (aged 35.6 +/- 10.3 y and BMI of 44.7 +/- 4.9 kg/m2) were evaluated by indirect calorimetry with a metabolic monitor Deltatrac (Datex Inst., Finland), before undergoing gastric bypass. REE was calculated with the following equations: Harris-Benedict's with both actual and adjusted weight, Ireton-Jones', Mifflin's, and Carrasco's Fast Estimation, which corresponds to 16.2 kcal x kg actual weight. RESULTS: (mean +/- sd). Measured REE was 1797 +/- 239 kcal/day. All formulas, except Harris-Benedict's with adjusted weight, overestimated REE. The Ireton-Jones' equation presented the greater overestimation (689 +/- 329 kcal/day), whereas Mifflin's equation overestimated REE only by 6 +/- 202 kcal/day. No significant differences were detected between measured and calculated REE by Mifflin's and Carrasco's Fast Estimation. Accuracy (defined as difference between calculated and measured REE within +/- 10%) was greater with Mifflin's equation (68%), followed by Harris-Benedict's with actual weight (64%) and Carrasco's Fast Estimation (61%). By using the Bland-Altman analysis, significant correlations were observed between calculated-measured REE and mean REE (calculated + measured/2) with all equations except Carrasco's Fast Estimation. This means that all but one formula underestimate or overestimate REE depending on the level of measured REE. CONCLUSION: In severe and morbid obese women, Mifflin's and Carrasco's Fast Estimation equations provided the best performance to estimate REE. Before recommending an equation in an a subset of individuals it is necessary to make previous validation studies to determine that equation with the best predictive power for this particular group of patients. SN - 0212-1611 UR - https://www.unboundmedicine.com/medline/citation/17650881/[Agreement_between_measured_and_calculated_by_predictive_formulas_resting_energy_expenditure_in_severe_and_morbid_obese_women]_ L2 - https://medlineplus.gov/obesity.html DB - PRIME DP - Unbound Medicine ER -