Bioelectrical impedance vector distribution in the first year of life

Savino, Francesco; Grasso, Giulia; Cresi, Francesco; Oggero, R; Silvestro, Leandra

doi:10.1016/s0899-9007(02)00947-4

Cited by 30 publications

(36 citation statements)

References 34 publications

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“…Bioresistance correlates negatively with lean body mass measurements obtained by dual-energy x-ray absorptiometry and deuterium oxide dilution methodologies in adults, children, and neonates (25)(26)(27). Normal values for bioresistance are available in Italian infants (28), but values for Hispanic neonates have not been reported. All measurements were made by one investigator (J.S.D.…”

Section: Data Collectionmentioning

confidence: 97%

Insulin Resistance in Hispanic Large-for-Gestational-Age Neonates at Birth

Dyer

Rosenfeld

Rice

et al. 2007

The Journal of Clinical Endocrinology &Amp; Metabolism

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Section: Data Collectionmentioning

confidence: 97%

Insulin Resistance in Hispanic Large-for-Gestational-Age Neonates at Birth

Dyer

Rosenfeld

Rice

et al. 2007

The Journal of Clinical Endocrinology &Amp; Metabolism

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“…Accuracy of the prediction equations depends on numerous assumptions, including constant tissue hydration and homogenous conduction of the electrical current through a cylindrical body. The former assumption is poorly upheld in infancy; as mentioned above, body water compartments and the FFM hydration are undergoing rapid changes during infancy here that affect fluid distribution and electrolyte concentrations between the intra- and extracellular compartments, making estimates of body composition obtained from BIA imprecise for the first few years of life (Margutti et al, 2010; Savino et al, 2003). For these and other reasons, BIA body composition equations tend to have poor performance across different ethnic groups and populations (Dehghan and Merchant, 2008), including in infants (Tanabe et al, 2012).…”

Section: Bioelectrical Impedance Analysis (Bia)mentioning

confidence: 99%

“…BIVA uses R and X c values (both adjusted for length) directly from the instrument (Piccoli et al, 1994), without reliance on any assumptions about their relationship to FFM. BIVA reference data are available for both neonates and older infants (Barbosa-Silva et al, 2005; L’Abee et al, 2010; Margutti et al, 2010; Savino et al, 2003). Multifrequency bioelectrical impedance spectroscopy (BIS), in which over 250 different frequencies are used, has also been examined in infants to distinguish between intracellular and extracellular water; interobserver error in extracellular and intracellular resistance measures (Re and Ri, respectively) is very good to excellent (ICC =0.97 for Re and 0.72 for Ri), as is intra-observer error (ICC for Re =0.97–0.99; ICC for Ri =0.61–0.85) in infants 0 to 6 months (Sesmero et al, 2005).…”

Section: Bioelectrical Impedance Analysis (Bia)mentioning

confidence: 99%

Body composition assessment in the infant

Demerath

Fields

2014

American J Hum Biol

166

187

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Body composition assessment provides a sharper picture of the human biological response to genetic and environmental influences than measures of body size and weight. Infant body composition is particularly important as a marker of fetal adaptation and developmental programming of subsequent health and disease, but until recently, the range of options for measuring infant body composition was relatively narrow. The purpose of this Toolkit: Methods in Human Biology review is to provide a comprehensive overview of methods of body composition methods currently used in infants 0 to 2 years of age, including anthropometric prediction equations, air displacement plethysmography (ADP), dual energy X-ray absorptiometry (DXA), bioelectrical impedance analysis (BIA), isotope dilution, and magnetic resonance imaging (MRI). Information on the reliability, validity, and accuracy of the methods is provided. Unique aspects of infant physiology and behavior create challenges for body composition assessment, but this review provides guidance on suitable testing approaches and environments that may aid researchers in this important area of investigation.

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“…However, the variability of estimates obtained with the best BIA regression equations is unacceptable for clinical purposes, particularly in infants. On the other hand, BIA values presented as direct data without using the equations recently published [22][23][24]37] have proved to be very useful to evaluate hydration status variations in childhood.…”

Section: Introductionmentioning

confidence: 99%

The Biagram Vector: A Graphical Relation between Reactance and Phase Angle Measured by Bioelectrical Analysis in Infants

et al. 2004

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Background: Biagram vector is derived by plotting direct measurements of reactance and phase angle from the analyzer, which are not dependent on anthropometric characteristics of the subject and it can be considered an emerging method for evaluating the nutritional status in clinical practice. Aim: To calculate and plot the Biagram vector in a sample of healthy infants in their first year of life. Methods: 174 healthy infants (99 male, 75 female) aged under 1 year, born at full term and adequate for gestational age, were enrolled in a cross-sectional study. The sample was divided into three age groups: 0–3.99 months (group A), 4–7.99 months (group B), and 8–11.99 months (group C). Bioelectric impedance analysis (BIA) was performed by a tetrapolar single frequence phase-sensitive impedance analyzer (STA/BIA; Akern Srl, Firenze, Italy). Results: Biagram vector showed an increasing trend (p < 0.05) in the first year of life (group A: 27.9 ± 12.6; group B: 32.1 ± 9.7; group C: 37.2 ± 9.5). Females showed Biagram vector values significantly higher than males in group A (34.7 ± 15.0 vs. 24.0 ± 9.1; p < 0.05). 95% confidence ellipses of Biagram vector for each age group were calculated and plotted and a comparison of our results with published data calculated in older children was conducted. Conclusion: The bivariate analysis of BIA measurements, plotted as a vector in relation to the age, showed an increasing trend with a higher gain rate under 1 year with respect to the following age periods. These data could reflect the variation of body composition in the first years of life and could be of interest to assess the nutritional status for clinical practice.

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Bioelectrical impedance vector distribution in the first year of life

Cited by 30 publications

References 34 publications

Insulin Resistance in Hispanic Large-for-Gestational-Age Neonates at Birth

Insulin Resistance in Hispanic Large-for-Gestational-Age Neonates at Birth

Body composition assessment in the infant

The Biagram Vector: A Graphical Relation between Reactance and Phase Angle Measured by Bioelectrical Analysis in Infants

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