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Hand-to-foot bioelectrical impedance analysis to measure fat mass in healthy children : a comparison with air-displacement plethysmography

Lisa Foucart (UGent) , Annelies De Decker (UGent) , Isabelle Sioen (UGent) , Stefaan De Henauw (UGent) and Nathalie Michels (UGent)
(2017) NUTRITION & DIETETICS. 74(5). p.516-520
Author
Organization
Abstract
Aim: To identify children at risk of overweight, assessing children's body composition in a valid way is crucial. The present cross-sectional study examines the comparability of children's fat mass percentage obtained by hand-to-foot bioelectrical impedance analysis (BIA) versusBodPod air-displacement plethysmography as a reference method. Methods: The body composition of 206 Belgian children (7-13 years; 7.7% overweight) was measured with BodPod and hand-to-foot BIA (Tanita BC418 with built-in formula). Results: Overall, comparability was the highest in girls. Good ranking agreement (rho = 0.819) and interchangeability (intra-class correlation (ICC) = 0.757) were found in girls but not in boys (rho = 0.568; ICC = 0.512). Although bioelectrical impedance resulted in an overall overestimation of only 0.5 fat%, it underestimated and overestimated fat% in children with, respectively, higher and lower fat%. The 95% limits of agreement distance was around 17 fat%, and there was a significant difference from the line of identity (intercept 0; slope 1). Conclusions: Despite good ranking agreement, the use of BIA as an alternative for the BodPod is not recommended because of over-/underestimation and wide limits of agreement. It is not possible to calculate a simple correction factor for the whole fat% range to make the two approaches interchangeable.
Keywords
air-displacement plethysmography, bioelectrical impedance, children, BODY-COMPOSITION, OBESE CHILDREN, ADOLESCENTS

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MLA
Foucart, Lisa et al. “Hand-to-foot Bioelectrical Impedance Analysis to Measure Fat Mass in Healthy Children : a Comparison with Air-displacement Plethysmography.” NUTRITION & DIETETICS 74.5 (2017): 516–520. Print.
APA
Foucart, L., De Decker, A., Sioen, I., De Henauw, S., & Michels, N. (2017). Hand-to-foot bioelectrical impedance analysis to measure fat mass in healthy children : a comparison with air-displacement plethysmography. NUTRITION & DIETETICS, 74(5), 516–520.
Chicago author-date
Foucart, Lisa, Annelies De Decker, Isabelle Sioen, Stefaan De Henauw, and Nathalie Michels. 2017. “Hand-to-foot Bioelectrical Impedance Analysis to Measure Fat Mass in Healthy Children : a Comparison with Air-displacement Plethysmography.” Nutrition & Dietetics 74 (5): 516–520.
Chicago author-date (all authors)
Foucart, Lisa, Annelies De Decker, Isabelle Sioen, Stefaan De Henauw, and Nathalie Michels. 2017. “Hand-to-foot Bioelectrical Impedance Analysis to Measure Fat Mass in Healthy Children : a Comparison with Air-displacement Plethysmography.” Nutrition & Dietetics 74 (5): 516–520.
Vancouver
1.
Foucart L, De Decker A, Sioen I, De Henauw S, Michels N. Hand-to-foot bioelectrical impedance analysis to measure fat mass in healthy children : a comparison with air-displacement plethysmography. NUTRITION & DIETETICS. 2017;74(5):516–20.
IEEE
[1]
L. Foucart, A. De Decker, I. Sioen, S. De Henauw, and N. Michels, “Hand-to-foot bioelectrical impedance analysis to measure fat mass in healthy children : a comparison with air-displacement plethysmography,” NUTRITION & DIETETICS, vol. 74, no. 5, pp. 516–520, 2017.
@article{8522382,
  abstract     = {Aim: To identify children at risk of overweight, assessing children's body composition in a valid way is crucial. The present cross-sectional study examines the comparability of children's fat mass percentage obtained by hand-to-foot bioelectrical impedance analysis (BIA) versusBodPod air-displacement plethysmography as a reference method. 
Methods: The body composition of 206 Belgian children (7-13 years; 7.7% overweight) was measured with BodPod and hand-to-foot BIA (Tanita BC418 with built-in formula). 
Results: Overall, comparability was the highest in girls. Good ranking agreement (rho = 0.819) and interchangeability (intra-class correlation (ICC) = 0.757) were found in girls but not in boys (rho = 0.568; ICC = 0.512). Although bioelectrical impedance resulted in an overall overestimation of only 0.5 fat%, it underestimated and overestimated fat% in children with, respectively, higher and lower fat%. The 95% limits of agreement distance was around 17 fat%, and there was a significant difference from the line of identity (intercept 0; slope 1). 
Conclusions: Despite good ranking agreement, the use of BIA as an alternative for the BodPod is not recommended because of over-/underestimation and wide limits of agreement. It is not possible to calculate a simple correction factor for the whole fat% range to make the two approaches interchangeable.},
  author       = {Foucart, Lisa and De Decker, Annelies and Sioen, Isabelle and De Henauw, Stefaan and Michels, Nathalie},
  issn         = {1446-6368},
  journal      = {NUTRITION & DIETETICS},
  keywords     = {air-displacement plethysmography,bioelectrical impedance,children,BODY-COMPOSITION,OBESE CHILDREN,ADOLESCENTS},
  language     = {eng},
  number       = {5},
  pages        = {516--520},
  title        = {Hand-to-foot bioelectrical impedance analysis to measure fat mass in healthy children : a comparison with air-displacement plethysmography},
  url          = {http://dx.doi.org/10.1111/1747-0080.12345},
  volume       = {74},
  year         = {2017},
}

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