TY - JOUR
T1 - Precision and within- and between-day variation of bioimpedance parameters in children aged 2-14 years
AU - Andersen, Trine B
AU - Jødal, Lars
AU - Arveschoug, Anne
AU - Eskild-Jensen, Anni
AU - Frøkiær, Jørgen
AU - Brøchner-Mortensen, Jens
N1 - Paper id:: PMID: 21074302
PY - 2011
Y1 - 2011
N2 - 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
AB - 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
U2 - 10.1016/j.clnu.2010.10.005
DO - 10.1016/j.clnu.2010.10.005
M3 - Journal article
SN - 0261-5614
VL - 30
SP - 326
EP - 331
JO - Clinical Nutrition
JF - Clinical Nutrition
ER -