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Nutrición Hospitalaria

On-line version ISSN 1699-5198Print version ISSN 0212-1611

Abstract

BALLESTEROS-VASQUEZ, Martha Nydia et al. Effect of ingestion and excretion of fluids in determining body composition with deuterium dilution method in school children. Nutr. Hosp. [online]. 2015, vol.32, n.3, pp.1324-1328. ISSN 1699-5198.  http://dx.doi.org/10.3305/nh.2015.32.3.9295.

Introduction: the deuterium dilution technique is a reference method for measuring body composition in children. However, to our knowledge, there is no report on how some of the procedures used affect the measurement of total body water (TBW) and other estimates. Objective: to analyze whether considering fluid intake and urine excretion during the test affects the final TBW, fat mass and fat free mass results. Results and discussion: ingestion of fluids (100 mL rinse water + orange juice 150 mL) and excretion (urine) were measured in 139 schoolchildren (65 girls) during the determination of TBW. We found significant differences in body composition (p < 0.001), TBW (100-200 mL), FFM and FM (100-300 g) when corrected by volume of fluids ingested and excreted. However, these differences were not considered clinically relevant.

Keywords : Body composition; Deuterium dilution; School children.

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