Vásquez F, Diaz E, Lera L, Vásquez L, Anziani A, Burrows R. [Methods of body composition and four compartiments model in obese school children].
NUTR HOSP 2013;
27:1079-85. [PMID:
23165545 DOI:
10.3305/nh.2012.27.4.5819]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 03/02/2012] [Indexed: 12/01/2022] Open
Abstract
INTRODUCTION
In Chile, the prevalence of obesity in schoolchildren is 21.3%. The study and individual intervention of this malnutrition, it is necessary to have not only global indicators of nutritional status, but also indicators that give information on body composition.
OBJECTIVE
To compare estimates of body fat isotopic dilution, plethysmography and radiographic absorptiometry 4C model in overweight schoolchildren.
METHODS
We worked with 61 obese (BMI ≥ p 95) of both sexes, between 8 and 13 years, enrolled in a school in a district of the city of Santiago. The multicompartmental body composition determination, considered isotopic dilution, plethysmography and radiographic absorptiometry. Using as a reference standard four compartment model of Fuller.
RESULTS
In both sexes, the method showed better agreement with the reference of 4 compartments was isotope dilution (r = 0.98, p < 0.01). In children, the isotopic dilution underestimates body fat in -0.40 kg. By contrast, DEXA and plethysmography overestimate body fat by 0.81 kg and 1.89 kg respectively. In women, all methods overestimate body fat, with less emphasis isotopic dilution value 0.46 kg, 0.52 kg after DEXA and plethysmography 1.31 kg.
CONCLUSIONS
The deuterium isotopic dilution would be the most sensitive method for estimating body fat in research studies because it shows the best agreement with the gold standard multicompartmental model.
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