BACKGROUND: The accurate measurement of body composition is useful in assessments of infant growth and nutritional status. OBJECTIVE: This study evaluated the reliability and accuracy of a new air-displacement plethysmography (ADP) system for body-composition assessment in infants. DESIGN: Between- and within-day reliability was assessed by comparing the percentage body fat (%BF) obtained on consecutive days and on the same day, respectively, in 36 full-term infants. Accuracy was assessed by comparing %BF measured with the use of ADP and %BF measured with the use of deuterium (2H2O) dilution in 53 infants. RESULTS: There were no significant differences in %BF between days (-0.50 +/- 1.21%BF) or within days (0.16 +/- 1.44%BF). Mean between- and within-day test-retest SDs of 0.69 and 0.72%BF, respectively, indicated excellent reliability. The %BF measurements obtained by using ADP were not significantly influenced by infant behavioral state. Mean %BF obtained by using ADP (20.32%BF) did not differ significantly from that obtained by using 2H2O dilution (20.39%BF), and the regression line [%BF(2H2O) = 0.851%BF (ADP) + 3.094] gave a high R2 (0.76) and a low SEE (3.26). The 95% limits of agreement between ADP and 2H2O (-6.84%BF, 6.71%BF) were narrower than those reported for other body-composition techniques used in infants. Individual differences between the 2 methods were not a function of body mass or fatness. CONCLUSION: ADP is a reliable and accurate instrument for determining %BF in infants, and it has the potential for use in both research and clinical settings.
BACKGROUND: The accurate measurement of body composition is useful in assessments of infant growth and nutritional status. OBJECTIVE: This study evaluated the reliability and accuracy of a new air-displacement plethysmography (ADP) system for body-composition assessment in infants. DESIGN: Between- and within-day reliability was assessed by comparing the percentage body fat (%BF) obtained on consecutive days and on the same day, respectively, in 36 full-term infants. Accuracy was assessed by comparing %BF measured with the use of ADP and %BF measured with the use of deuterium (2H2O) dilution in 53 infants. RESULTS: There were no significant differences in %BF between days (-0.50 +/- 1.21%BF) or within days (0.16 +/- 1.44%BF). Mean between- and within-day test-retest SDs of 0.69 and 0.72%BF, respectively, indicated excellent reliability. The %BF measurements obtained by using ADP were not significantly influenced by infant behavioral state. Mean %BF obtained by using ADP (20.32%BF) did not differ significantly from that obtained by using 2H2O dilution (20.39%BF), and the regression line [%BF(2H2O) = 0.851%BF (ADP) + 3.094] gave a high R2 (0.76) and a low SEE (3.26). The 95% limits of agreement between ADP and 2H2O (-6.84%BF, 6.71%BF) were narrower than those reported for other body-composition techniques used in infants. Individual differences between the 2 methods were not a function of body mass or fatness. CONCLUSION:ADP is a reliable and accurate instrument for determining %BF in infants, and it has the potential for use in both research and clinical settings.
Authors: Rachel Kadakia; Denise M Scholtens; Gerald W Rouleau; Octavious Talbot; Olga R Ilkayeva; Tabitha George; Jami L Josefson Journal: J Pediatr Date: 2018-09-10 Impact factor: 4.406
Authors: Curtis S Harrod; Regina M Reynolds; Lisa Chasan-Taber; Tasha E Fingerlin; Deborah H Glueck; John T Brinton; Dana Dabelea Journal: J Pediatr Date: 2014-07-22 Impact factor: 4.406
Authors: Wei Perng; Brandy M Ringham; Deborah H Glueck; Katherine A Sauder; Anne P Starling; Mandy B Belfort; Dana Dabelea Journal: Am J Clin Nutr Date: 2017-06-28 Impact factor: 7.045
Authors: Sani M Roy; David A Fields; Jonathan A Mitchell; Colin P Hawkes; Andrea Kelly; Gary D Wu; Patricia A DeRusso; Michal A Elovitz; Eileen Ford; Danielle Drigo; Babette S Zemel; Shana E McCormack Journal: J Pediatr Date: 2018-09-26 Impact factor: 4.406
Authors: Brianna F Moore; Katherine A Sauder; Anne P Starling; James R Hébert; Nitin Shivappa; Brandy M Ringham; Deborah H Glueck; Dana Dabelea Journal: J Pediatr Date: 2017-12-06 Impact factor: 4.406