title: Bone mineral content and density in obese, overweight and normal weight adolescent boys.
abstract: OBJECTIVE
  The aim of this study was to compare bone mineral content (BMC), bone mineral density (BMD) and bone mineral apparent density (BMAD) in obese, overweight and normal weight adolescent boys.
  
  
  RESULTS
  This study included 23 obese, 19 overweight and 25 normal weight adolescents (aged 14-20 years) boys. The three groups (obese, overweight and normal weight) were matched for age and maturation index. Body composition, BMC and BMD were assessed by dual-energy X-ray absorptiometry (DXA). The expressions whole body (WB) BMC/height and WB BMD/height were used to adjust for WB bone size. BMAD was calculated for the WB. WB BMC, WB BMC/height, total hip (TH) BMD, femoral neck (FN) BMD and ultra distal (UD) radius BMD) were higher in obese and overweight boys in comparison to normal weight boys (p < 0.05). WB BMAD was lower in obese boys in comparison to overweight and normal weight boys (p < 0.05). After adjustment for either weight or lean mass, obese boys displayed lower WB BMC, WB BMC/height and WB BMD values in comparison to overweight and normal weight boys (p < 0.05).
  
  
  CONCLUSIONS
  This study suggests that WB BMC, WB BMC/height and WB BMD do not adapt to the increased body weight in obese adolescent boys.
authors.affiliation: Laboratoire de physiologie et de biomécanique de la performance motrice, University of Balamand, Al Koura, Lebanon.
authors.forename: Zaher
authors.initials: Z
authors.lastname: El Hage
authors.affiliation: EA 4110, Laboratoire RELACS, Département STAPS, Université du Littoral Côte d'Opale, Dunkerque, France.
authors.forename: Denis
authors.initials: D
authors.lastname: Theunynck
authors.affiliation: Laboratoire de physiologie et de biomécanique de la performance motrice, University of Balamand, Al Koura, Lebanon.
authors.forename: Christophe
authors.initials: C
authors.lastname: Jacob
authors.affiliation: Laboratoire de physiologie et de biomécanique de la performance motrice, University of Balamand, Al Koura, Lebanon.
authors.forename: Elie
authors.initials: E
authors.lastname: Moussa
authors.affiliation: Rheumatology Department, Hôtel-Dieu Hospital, Saint-Joseph University, Beirut, Lebanon.
authors.forename: Rafic
authors.initials: R
authors.lastname: Baddoura
authors.affiliation: EA 4110, Laboratoire RELACS, Département STAPS, Université du Littoral Côte d'Opale, Dunkerque, France.
authors.forename: Gautier
authors.initials: G
authors.lastname: Zunquin
authors.affiliation: Laboratoire de physiologie et de biomécanique de la performance motrice, University of Balamand, Al Koura, Lebanon.
authors.forename: Rawad
authors.initials: R
authors.lastname: El Hage
mesh_terms: D000293:Adolescent; D015992:Body Mass Index; D001835:Body Weight / Q000502:physiology; D015519:Bone Density / Q000502:physiology*; D003906:Developing Countries; D006801:Humans; D007861:Lebanon; D008297:Male; D008403:Mass Screening; D009765:Obesity / Q000503:physiopathology*; D050177:Overweight / Q000503:physiopathology*; D012016:Reference Values; D055815:Young Adult