title: Association of sexual maturation with excess body weight and height in children and adolescents.
abstract: BACKGROUND
  Studies addressing the influence of early sexual maturation on the excess of body weight and height of children and adolescents are scarce. The aim of the study was to analyze the association of sexual maturation with excess body weight and height in children and adolescents.
  
  
  METHODS
  This was a cross-sectional study performed in Florianópolis city, Brazil, in 2007, with 2339 school children, aged 8-14 years (1107 males). Selection was based on a probabilistic, cluster-stratified sampling technique. School children were classified according to the presence of excess body weight, using sex- and age-specific body mass index (BMI) cutoff points. Z-scores were calculated from height and BMI data. Sexual maturation was self-assessed according to Tanner stages of development. Subjects were ranked based on tertiles of sexual maturation (early, normal and late) for each stage of development. Poisson and linear regression models were used.
  
  
  RESULTS
  Compared to the reference group (normal sexual maturation), early maturing females had higher prevalence of excess weight (adjusted prevalence ratio: 1.70; 95% CI: 1.24 to 2.33) and increased height-for-age (adjusted β: 0.37; 95% CI: 0.14 to 0.59), while late maturing females had lower prevalence of excess weight (adjusted prevalence ratio: 0.57; 95% CI: 0.37 to 0.87) and decreased height-for-age (adjusted β: -0.38; 95% CI: -0.56 to -0.20). In males, early and late sexual maturation were associated with increased (adjusted β: 0.37; 95% CI: 0.14 to 0.59) and decreased (adjusted β: -0.38; 95% CI: -0.56 to -0.20) height-for-age, respectively.
  
  
  CONCLUSIONS
  Early sexual maturation is associated with excess body weight in females and with greater height-for-age in both sexes.
authors.affiliation: Programa de Pós-Graduação em Educação Física, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, Santa Catarina 88040900, Florianópolis, Brazil. jucemarb@hotmail.com.
authors.forename: Jucemar
authors.initials: J
authors.lastname: Benedet
authors.forename: Adair
authors.initials: A
authors.lastname: da Silva Lopes
authors.forename: Fernando
authors.initials: F
authors.lastname: Adami
authors.forename: Patrícia
authors.initials: P
authors.lastname: de Fragas Hinnig
authors.forename: Francisco de Assis Guedes
authors.initials: Fde A
authors.lastname: de Vasconcelos
mesh_terms: D000293:Adolescent; D001827:Body Height; D001835:Body Weight; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D050177:Overweight / Q000453:epidemiology / Q000503:physiopathology*; D015995:Prevalence; D012741:Sexual Maturation