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Comparison of Air‐Displacement Plethysmography, Hydrodensitometry, and Dual X‐ray Absorptiometry for Assessing Body Composition of Children 10 to 18 Years of Age
Author(s) -
LOCKNER D. W.,
HEYWARD V. H.,
BAUMGARTNER R. N.,
JENKINS K. A.
Publication year - 2000
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2000.tb06423.x
Subject(s) - plethysmograph , body fat percentage , dual energy , point of delivery , dual energy x ray absorptiometry , zoology , medicine , fat mass , mathematics , nuclear medicine , anthropometry , bone mineral , body weight , biology , botany , osteoporosis
A bstract : Body density (Db) of 54 boys and girls 10–18 years of age (13.9 ± 2.4 years) was measured in an air‐displacement plethysmograph, the BOD POD®, and compared to Db determined by hydrodensitometry (HW). Both Db values were converted to percent body fat (%BF) using a two‐component model conversion formula and compared to %BF determined by dual energy X‐ray absorptiometry (DXA). Body density estimated from the BOD POD (1.04657 ± 0.01825 g/cc) was significantly higher than that estimated from HW (1.04032 ± 0.01872 g/cc). The relative body fat calculated from the BOD POD (23.12 ± 8.39 %BF) was highly correlated but, on average, 2.9% BF lower than %BF DXA. Average %BF estimates from HW and DXA were not significantly different. Despite consistently underestimating the %BF of children, the strong relationship between DXA and the BOD POD suggests that further investigation may improve the accuracy of the BOD POD for assessing body composition in children.