Article
Distribution of bioelectrical impedance vector values in multi-ethnic infants and pre-school children
Registro en:
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.
0261-5614
10.1016/j.clnu.2011.08.006
Autor
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
Resumen
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). 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.