title: Validity of predictive equations developed to estimate body fat from anthropometry and bioelectrical impedance analysis in 8-10 year-old children.
abstract: OBJECTIVE
  To date, no studies have examined the validity of skinfold-based (SF) equations and Bioelectrical Impedance Analysis (BIA) in predicting body fat in children of Middle-Eastern origin. The objective of this study was to examine the predictive validity of previously published SF-based equations and BIA in estimating body fat in 8-10 year-old Lebanese children, and to develop new prediction equations for use in this population group.
  
  
  METHODS
  158 subjects participated in the study. Percent body fat (% BF) estimates derived from SF-based equations and BIA were compared against the deuterium dilution technique (DDL). Multivariate linear regression analyses were conducted for the development of new prediction equations to estimate %BF using anthropometric variables.
  
  
  RESULTS
  Bland-Altman analysis showed that SF-based equations and BIA significantly underestimated %BF as compared to DDL. Mean differences in %BF ranged between 1.3 and 6.5% in boys and 4.5-9.5% in girls. New anthropometry-based equations were proposed for the prediction of %BF in Lebanese pre-pubertal children.
  
  
  CONCLUSIONS
  Previously published prediction equations underestimated %BF in Lebanese pre-pubertal children. The validity of the new prediction equations developed in this study to estimate %BF in Lebanese children needs to be investigated in future studies.
authors.affiliation: Faculty of Agricultural and Food Sciences, Department of Nutrition and Food Sciences, American University of Beirut, P.O. Box: 110236, Riad El-Solh, Beirut 1107 2020, Lebanon. ln10@aub.edu.lb
authors.forename: Lara
authors.initials: L
authors.lastname: Nasreddine
authors.forename: Farah
authors.initials: F
authors.lastname: Naja
authors.forename: Andrew P
authors.initials: AP
authors.lastname: Hills
authors.forename: Sara Kassem
authors.initials: SK
authors.lastname: Youssef
authors.forename: Joelle
authors.initials: J
authors.lastname: Chahine
authors.forename: Nahla
authors.initials: N
authors.lastname: Hwalla
mesh_terms: D050154:Adiposity / Q000208:ethnology; D000465:Algorithms; D000886:Anthropometry / Q000379:methods*; D001823:Body Composition; D002648:Child; D003903:Deuterium; D017097:Electric Impedance; D005260:Female; D006801:Humans; D007201:Indicator Dilution Techniques; D007861:Lebanon; D008297:Male; D008954:Models, Biological; D050177:Overweight / Q000175:diagnosis* / Q000208:ethnology; D011237:Predictive Value of Tests; D012885:Skinfold Thickness
chemical_list: D003903:Deuterium