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DISTRIBUTION OF BIOELECTRICAL IMPEDANCE VECTOR VALUES IN MULTI-ETHNIC INFANTS AND PRE-SCHOOL CHILDREN
Tanabe, Roberta Falcão et al. | Date Issued: 2012
Author
Tanabe, Roberta Falcão
Azevedo, Zina Maria Almeida de
Fonseca, Vania Matos
Peixoto, Maria Virginia Marques
Anjos, Luiz Antonio dos
Gaspar-Elsas, Maria Ignez Capella
Moore, Daniella Campelo Batalha Cox
Ramos, Eloane Gonçalves
Affilliation
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Departamento de Pediatria. Unidade de Terapia Intensiva. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Departamento de Pediatria. Unidade de Terapia Intensiva. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Departamento de Pesquisa. Laboratório de Métodos Analíticos. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Departamento de Pesquisa. Laboratório de Métodos Analíticos. Rio de Janeiro, RJ, Brasil.
Universidade Federal Fluminense. Departamento de Nutrição Social. Laboratório de Pesquisa Nutricionais e Funcionais. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Departamento de Pediatria. Laboratório de Fisiopatologia Humana. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Departamento de Pediatria. Laboratório de Fisiopatologia Humana. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Departamento de Pesquisa. Laboratório de Métodos Analíticos. Rio de Janeiro, RJ, Brasil.
Abstract
Background & aims: Ethnicity may influence bioimpedance values. The goal of this study was to measure total body impedance vector in infants and pre-school children in Brazil and compare them with those reported in other countries. Methods: We analyzed bioelectrical impedance from a sample of 255 healthy Brazilian children, aged 1 e36 months, using the RXc graph method (tetrapolar analysis at 50 kHz frequency). The 95%, 75% and 50% tolerance ellipses were plotted by age group. Results: The mean impedance vector showed migration across age groups, with progressive higher reactances and lower resistances as age increased. The mean bioimpedance vectors from the present sample of Brazilian children were different from those of European children of the same age ranges. Conclusions: Our results confirm the importance of defining reference values of total body impedance vector for each country in view of the considerable ethnic diversity among different geographical areas.
Keywords
Bioelectrical Impedance Analysis
Impedance Vector
Reference Values
Infant
Children
Body Composition analysi
 
DeCS
Valores de Referência
Criança
Composição Corporal
 
Publisher
Elsevier
Citation
TANABE, Roberta Falcão et al. Distribution of bioelectrical impedance vector values in multi-ethnic infants and pre-school children. Clinical Nutrition, Edinburgh, v. 31, p. 144-148, 2012.
DOI
10.1016/j.clnu.2011.08.006
ISSN
0261-5614
Notes
We thank Antonio Piccoli and Giordano Pastori, from the Medical and Surgical Science of Padova University, who kindly provided the program for ellipse generation used in this study (BIVA software, Padova, Italy, 2002).