title: Relations between birth weight and hip bone strength indices in a group of adolescent girls.
abstract: OBJECTIVE
  The aim of this study was to explore the relations between birth weight and hip bone strength indices in a group of adolescent girls.
  
  
  RESULTS
  This study included 26 adolescent girls (153 +/- 2.9 years old). Weight and height were measured and body mass index (BMI) was calculated. Birth weights were obtained from obstetric records. Body composition and BMD were assessed by dual-energy X-ray absorptiometry (DXA). To evaluate bone geometry, DXA scans were analyzed at the femoral neck (FN), the intertrochanteric (IT) region and the femoral shaft (FS) by the Hip Structure Analysis (HSA) program. Cross sectional area (CSA), an index of axial compression strength, cross sectional moment of inertia (CSMI), an index of structural rigidity and section modulus (Z), an index of bending strength, were measured from bone mass profiles. Birth weight was positively correlated to CSA, CSMI and Z of the three sites (FN, IT and FS). However, the positive associations between birth weight and HSA variables disappeared after controlling for body weight.
  
  
  CONCLUSIONS
  In this population, the positive associations between birth weight and hip bone strength indices disappear after controlling for body weight.
authors.affiliation: Laboratoire de physiologie et de biomécanique de la performance motrice, Université de Balamand, Al Koura, Liban. rawadelhage21@hotmail.com
authors.forename: Rawad
authors.initials: R
authors.lastname: El Hage
mesh_terms: D015502:Absorptiometry, Photon; D000293:Adolescent; D000886:Anthropometry; D001724:Birth Weight; D001823:Body Composition; D015519:Bone Density / Q000502:physiology; D002136:Calcium, Dietary / Q000008:administration & dosage; D019245:Compressive Strength; D003906:Developing Countries; D005260:Female; D005269:Femur / Q000502:physiology; D005272:Femur Neck / Q000502:physiology; D006244:Hardness; D006306:Health Surveys; D006615:Hip / Q000502:physiology; D006801:Humans; D007861:Lebanon; D013718:Tensile Strength
chemical_list: D002136:Calcium, Dietary