Bioelectrical impedance for measuring percentage body fat in young persons with Down syndrome: validation with dual energy absorptiometry.
Summary of "Bioelectrical impedance for measuring percentage body fat in young persons with Down syndrome: validation with dual energy absorptiometry."
Aim  Children with Down syndrome have an increased prevalence of obesity, although there is little work describing body composition in this population. The aims of this study were to accurately measure body fat in children with Down syndrome and to identify which existing algorithm best predicts percentage body fat in this population. Methods  Seventy children with Down syndrome had anthropometric, bioelectrical impedance analysis (BIA) and Dual energy x-ray absorptiometry (DXA) data collected to calculate percentage body fat (PBF). Pearson correlations were carried out to assess the relationships of various methods for measuring body fat, and Bland-Altman plots to assess systematic error. Results  Mean PBF was 30.5% for girls and 22.5% for boys. A total of 38% of girls and 23% of boys were obese according to international criteria. PBF as determined by DXA correlated well with PBF by BIA in both girls and boys (r=0.91 and 0.89 respectively, p<0.001). Conclusion  There are high rates of obesity in children with Down syndrome. BIA can be used to accurately determine adiposity in this population. We recommend the use of the Schaeffer algorithm for calculation of PBF in children with Down syndrome. © 2012 The Author(s)/Acta Paediatrica © 2012 Foundation Acta Paediatrica.
Affiliation
Department of Paediatrics, The University of Auckland, Auckland, New Zealand.
Journal Details
This article was published in the following journal.
Name: Acta paediatrica (Oslo, Norway : 1992)
ISSN: 1651-2227
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22897200
- DOI: http://dx.doi.org/10.1111/j.1651-2227.2012.02821.x
Medical and Biotech [MESH] Definitions
Cardiography, Impedance
A type of impedance plethysmography in which bioelectrical impedance is measured between electrodes positioned around the neck and around the lower thorax. It is used principally to calculate stroke volume and cardiac volume, but it is also related to myocardial contractility, thoracic fluid content, and circulation to the extremities.
Acoustic Impedance Tests
Objective tests of middle ear function based on the difficulty (impedance) or ease (admittance) of sound flow through the middle ear. These include static impedance and dynamic impedance (i.e., tympanometry and impedance tests in conjunction with intra-aural muscle reflex elicitation). This term is used also for various components of impedance and admittance (e.g., compliance, conductance, reactance, resistance, susceptance).
Plethysmography, Impedance
Recording changes in electrical impedance between electrodes placed on opposite sides of a part of the body, as a measure of volume changes in the path of the current. (Stedman, 25th ed)
Dielectric Spectroscopy
A technique of measuring the dielectric properties of materials, which vary over a range of frequencies depending on the physical properties of the material. The technique involves measuring, over a range of frequencies, ELECTRICAL IMPEDANCE and phase shift of an electric field as it passes through the material.
Body Composition
The relative amounts of various components in the body, such as percentage of body fat.
PubMed Articles
The aim of this study was to investigate the accuracy of BIA in the measurement of total body composition and regional fat and the fat free mass in the healthy young adults. Four hundred and three hea...
Esco, MR, Olson, MS, Williford, HN, Lizana, SN, and Russell, AR. The accuracy of hand-to-hand bioelectrical impedance analysis in predicting body composition in college-age female athletes. J Strength...
Accurate assessment of neonatal body composition is essential to studies investigating neonatal nutrition or developmental origins of obesity. Bioelectrical impedance analysis or bioimpedance analysis...
BACKGROUND: Validated equations for body composition analysis using bioelectrical impedance (BIA) in morbidly obese (MO) subjects are scarce. Thus, our aim was to develop new equ...
Abstract Background: Several techniques are currently used for measurement of body composition. Bioelectrical impedance assessment (BIA) is a simple, noninvasive method of assessing body composition....
Clinical Trials
Comparison Study for Bioelectrical Impedance Device to Measure Human Body Composition
The purpose of this study is to determine if the ElectroFluidGraph(tm) (EFG) impedance analyzer is comparable to a predicate device in measuring human body composition.
Peritoneal dialysis (PD) is a widely used modality of renal replacement therapy. Due to its continuous nature of therapy, better control of fluid status and preservation of residual renal...
OBJECTIVES: I. Evaluate the effect of aerobic exercise and progressive resistance plus megestrol acetate on lean body mass of patients with human immunodeficiency virus-related weight los...
The objective of this clinical trial is to determine normative Percentage Body-Weight/Weight-Bearing Values and Weight-bearing Gait Characteristics in different physiologic conditions...
The new BIOTRONIK implantable cardioverter defibrillator (ICD) family Lumax 540 is capable of measuring the intrathoracic impedance on a daily basis and transmission of impedance trend dat...
