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Revista chilena de nutrición

versión On-line ISSN 0717-7518

Resumen

FERREIRA NICOLETTI, Carolina et al. The body mass index is not associated with lipid or carbohydrate oxidation in hospitalized patients. Rev. chil. nutr. [online]. 2013, vol.40, n.1, pp.39-42. ISSN 0717-7518.  http://dx.doi.org/10.4067/S0717-75182013000100006.

Introduction: Energy balance is influenced by the oxidation of macronutrients (proteins, carbohydrates and lipids). Objective: To characterize substrate utilization in normal weight and obese. Subjects and Methods: Bioelectrical impedance analysis and indirect calorimetry were used to determine the oxidation of carbohydrates and lipids in hospitalized patients. Subjects were divided into three groups: group 1: BMI 18.5-24.9 kg/m, group 2: BMI 25-29.9 kg / m and Group 3: BMI> 30 k/m2. Groups of individuals were compared using ANOVA and, in some cases, after the Dunn test was applied (p <0.05 were considered significant). Results: 38 individuals (11 men and27 women) with a mean age of 44.3 ± 16.5 years ofwhich 18 were eutrophic, 10 overweightand10 obese. Obese subjects had higher resting energy expenditure than normal individuals. Obese and non-obese individuals oxidized similar amounts of carbohydrates and lipids. Conclusions: BMI was not associated with the oxidation oflipids and carbohydrates in hospitalized patients. The amount offat mass is associated with the total amount of carbohydrate and lipid oxidation.

Palabras clave : indirect calorimetry body mass index; substrate oxidation; lipids; carbohydrates.

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