title: [The levels of bone mineralization are influenced by body composition in children and adolescents].
abstract: BACKGROUND
  There is controversy over the effect of overweight and obesity in bone mineralization in adolescence.
  
  
  OBJECTIVE
  The aim of this study was to assess the level of bone mineral density (BMD) in a population of adolescents and study its relationship with body composition.
  
  
  METHODS
  The study population consisted of 157 adolescents (93 women and 64 men) of the province of Granada (Spain). The mean age was 14.22 ± 1.41 year. BMD was assessed by calcaneal osteosonography. The densitometric parameters were: Broadbandultrasound attenuation( BUA), T -score and Z -score. Body composition was determined with bio-electrical Impedance analyser.
  
  
  RESULTS
  The overweight and obese adolescents had higher values in the BUA versus normal-weighted adolescents (95.4 ± 17.77 and 90.0 ± 1.08 vs 81.1 ± 17.79), showing significant differences(p < 0.001 and p < 0.05, respectively). Even after adjustment for lean mass and fat mass, differences remained in overweight and obese subjects (p < 0.001 and p < 0.001). Correlation with lean mass was greater than with fat mass (B =, 402 p < 0.000 and B =, 228 p < 0.002).
  
  
  CONCLUSIONS
  Adolescents with overweight and/or obesity have higher levels of BMD even after adjustment for fat mass and muscle mass. Our results suggest that BMD increases in response to increased muscle mass in adolescents with overweight and/or obesity.
authors.affiliation: Alumna de Doctorado. Universidad de Granada.. slikirt@correo.ugr.es.
authors.forename: Maria
authors.initials: M
authors.lastname: Correa Rodríguez
authors.affiliation: Profesor/a Facultad Ciencias de la Salud. Universidad de Granada. España.. blarume@ugr.es.
authors.forename: Blanca
authors.initials: B
authors.lastname: Rueda Medina
authors.affiliation: Profesor/a Facultad Ciencias de la Salud. Universidad de Granada. España.. emigoji@ugr.es.
authors.forename: Emilio
authors.initials: E
authors.lastname: González Jiménez
authors.affiliation: Alumna de Doctorado. Universidad de Granada.. carmenf@ugr.es.
authors.forename: Carmen Flores
authors.initials: CF
authors.lastname: Navarro Pérez
authors.affiliation: Profesor/a Facultad Ciencias de la Salud. Universidad de Granada. España.. jschmidt@ugr.es.
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Schmidt-RioValle
mesh_terms: D000293:Adolescent; D001823:Body Composition; D015519:Bone Density; D005260:Female; D006801:Humans; D008297:Male