Validity assessment of a portable bioimpedance scale to estimate body fat percentage in White and African–American children and adolescents
Article first published online: 13 DEC 2012
© 2012 The Authors. Pediatric Obesity © 2012 International Association for the Study of Obesity
Volume 8, Issue 2, pages e29–e32, April 2013
How to Cite
Barreira, T. V., Staiano, A. E. and Katzmarzyk, P. T. (2013), Validity assessment of a portable bioimpedance scale to estimate body fat percentage in White and African–American children and adolescents. Pediatric Obesity, 8: e29–e32. doi: 10.1111/j.2047-6310.2012.00122.x
- Issue published online: 15 MAR 2013
- Article first published online: 13 DEC 2012
- Manuscript Accepted: 18 OCT 2012
- Manuscript Revised: 13 SEP 2012
- Manuscript Received: 13 JUN 2012
- Nutrition Obesity Research Center. Grant Number: 2P30DK072476
- National Institutes of Health
- bioelectrical impedance;
- body fat percentage;
- dual-energy X-ray absorptiometry
The objective of the study was to determine accuracy of the Tanita SC-240 body composition analyser to measure paediatric percent body fat (%BF).
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 Tanita SC-240.
Overall %BF was 33.5 ± 10.5% (Tanita 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 Tanita mean %BF estimates significantly differed from the DXA mean %BF in white boys (P = 0.001, Cohen's d = 0.40) and white girls (P = 0.006, Cohen's d = 0.48), but differences were of small effect. No differences in %BF estimates were found for African–American boys or girls.
In this sample, the Tanita SC-240 demonstrated acceptable accuracy for estimating %BF when compared with DXA, supporting its use in field studies.