Precision and within- and between-day variation of bioimpedance parameters in children aged 2–14 years

Summary Background & aims Bioimpedance spectroscopy (BIS) offers the possibility to perform rapid estimates of fluid distribution and body composition. Few studies, however, have addressed the precision and biological variation in a pediatric population. Our objectives were to evaluate precision...

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Bibliographic Details
Published in:Clinical nutrition (Edinburgh, Scotland) Scotland), 2011-06, Vol.30 (3), p.326-331
Main Authors: Andersen, Trine B, Jødal, Lars, Arveschoug, Anne, Eskild-Jensen, Anni, Frøkiær, Jørgen, Brøchner-Mortensen, Jens
Format: Article
Language:English
Subjects:
Adipose Tissue
Adipose Tissue - growth & development
Adolescent
Adolescent Development
Algorithms
bioelectrical impedance
Bioelectrical impedance spectroscopy
Biological and medical sciences
Biological variation
Body Composition
body fat
Body Fluids
Child
Child Development
Child, Preschool
children
Denmark
Dielectric Spectroscopy
Electric Impedance
Extracellular Fluid
fat free mass
Feeding. Feeding behavior
Female
Fundamental and applied biological sciences. Psychology
Gastroenterology and Hepatology
growth & development
Humans
Intracellular Fluid
lean body mass
linear models
Male
normal values
Reference Values
Repeatability
Reproducibility of Results
statistical analysis
statistical models
Statistics as Topic
Vertebrates: anatomy and physiology, studies on body, several organs or systems
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Summary:Summary Background & aims Bioimpedance spectroscopy (BIS) offers the possibility to perform rapid estimates of fluid distribution and body composition. Few studies, however, have addressed the precision and biological variation in a pediatric population. Our objectives were to evaluate precision, variation within- and between-days for the BIS-determined parameters total body fluid, extra-cellular fluid, intra-cellular fluid, body cell mass, fat-free mass, extra-cellular resistance, intra-cellular resistance and percentage body fat using a Xitron 4200. Methods All 133 children (81 boys, 52 girls; 2.4–14.9 years) had one series measured on day one (precision population). Forty-four children had a second series on day one (within-day sub-population). Thirty-two children had a series measured on the next day (between-day sub-population). Each measurement series consisted of three repeated measurements. A linear mixed model was used for statistical analysis. Results The precision was 0.3–0.8% in children ≥6 years and 0.5–2.4% in children
ISSN:0261-5614
1532-1983
DOI:10.1016/j.clnu.2010.10.005