title: Birth weight a negative determinant of whole body bone mineral apparent density in a group of adolescent boys.
abstract: The aim of this study was to explore the relation between birth weight and bone mass in a group of adolescent boys. This study included 44 adolescent (aged 14-20yr) boys. Anthropometric characteristics (height and weight) were measured and birth weights were obtained from the obstetric records. Body composition was assessed by dual-energy X-ray absorptiometry (DXA). Bone mineral content (BMC) and bone mineral density (BMD) of the whole body (WB) and the lumbar spine (L2-L4) were also assessed by DXA. Calculations of the bone mineral apparent density (BMAD) were completed for the WB and at the lumbar spine (L2-L4). The expressions WB BMC/height and WB BMD/height were calculated to adjust for WB bone size. Birth weight was positively correlated to body weight (r=0.37; p<0.05), body mass index (r=0.38; p<0.01), body fat percentage (r=0.44; p<0.01), and negatively associated with WB BMAD (r=-0.46; p<0.01). In conclusion, this study suggests that birth weight is a positive determinant of body weight, body mass index, and body fat percent but a negative determinant of WB BMAD in adolescent boys.
authors.affiliation: Laboratoire de physiologie et de biomécanique de la performance motrice, Université de Balamand, Al Koura, Lebanon. rawadelhage21@hotmail.com
authors.forename: Rawad
authors.initials: R
authors.lastname: El Hage
authors.forename: Elie
authors.initials: E
authors.lastname: Moussa
authors.forename: Zaher
authors.initials: Z
authors.lastname: El Hage
authors.forename: Christophe
authors.initials: C
authors.lastname: Jacob
mesh_terms: D015502:Absorptiometry, Photon; D000273:Adipose Tissue / Q000000981:diagnostic imaging / Q000502:physiology; D000293:Adolescent; D001724:Birth Weight / Q000502:physiology*; D001823:Body Composition / Q000502:physiology*; D015992:Body Mass Index; D015519:Bone Density / Q000502:physiology*; D015981:Epidemiologic Factors; D006801:Humans; D007861:Lebanon / Q000453:epidemiology; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging; D008297:Male; D055815:Young Adult