# [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

Nutricion hospitalaria 22:4 pg 410-6

### MeSH

AdultAlgorithms

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 AbstractJournal 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 -