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Validity assessment of a portable bioimpedance scale to estimate body fat percentage in W hite and A frican– A merican children and adolescents
Author(s) -
Barreira T. V.,
Staiano A. E.,
Katzmarzyk P. T.
Publication year - 2013
Publication title -
pediatric obesity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.226
H-Index - 69
eISSN - 2047-6310
pISSN - 2047-6302
DOI - 10.1111/j.2047-6310.2012.00122.x
Subject(s) - medicine , dual energy x ray absorptiometry , body fat percentage , zoology , mean difference , dual energy , fat mass , limits of agreement , nuclear medicine , body mass index , confidence interval , bone mineral , osteoporosis , biology
Summary Objective The objective of the study was to determine accuracy of the T anita SC ‐240 body composition analyser to measure paediatric percent body fat (% BF ). Methods Eighty‐nine African–American and white 5–18‐year‐olds participated in this study. % BF was estimated by dual‐energy X‐ray absorptiometry ( DXA ) and by the T anita SC ‐240. Results Overall % BF was 33.5 ± 10.5% ( T anita SC ‐240) vs. 34.5 ± 8.7% ( DXA ). There was no significant difference between the two measures ( P = 0.52, average error = −1.0%, average absolute error = 3.9%). The T anita mean % BF estimates significantly differed from the DXA mean % BF in white boys ( P = 0.001, C ohen's d = 0.40) and white girls ( P = 0.006, C ohen's d = 0.48), but differences were of small effect. No differences in % BF estimates were found for African–American boys or girls. Conclusions In this sample, the T anita SC ‐240 demonstrated acceptable accuracy for estimating % BF when compared with DXA , supporting its use in field studies.