title: [Cross-sectional association between consumption of grain/tubers and pubertal development among children and adolescents in Chengdu City].
abstract: OBJECTIVE
  To investigate association between the consumption of grain and tubers and pubertal development of children and adolescents in Chengdu city.
  
  
  METHODS
  Cross-sectional valid data from 1902 children and adolescents aged 7 - 18 years in Chengdu were analyzed. Based on food frequency questionnaire, the daily consumption of grain and tubers was calculated. Measurements of pubertal development were conducted among boys/girls.
  
  
  RESULTS
  The mean age of spermarche was 12.8, and that of menarche was 12.3. Boys who had spermarche consumed more grain than those had not yet (P < 0.0001), while girls who had menarche consumed less (P < 0.01). Consumption of grain was positively associated with pubertal development among boys (P < 0.0001). Both consumption of grain and tubers were associated with pubertal development among girls (P < 0.05).
  
  
  CONCLUSIONS
  Consumption of grain and tubers seem to be correlated with pubertal development among children and adolescents in Chengdu, and the association was not the same in each gender.
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Ruonan
authors.initials: R
authors.lastname: Duan
authors.forename: Hongmei
authors.initials: H
authors.lastname: Xue
authors.forename: Mingzhe
authors.initials: M
authors.lastname: Yang
authors.forename: Guo
authors.initials: G
authors.lastname: Cheng
mesh_terms: D000293:Adolescent; D002648:Child; D002681:China / Q000453:epidemiology; D003430:Cross-Sectional Studies; D004034:Diet Surveys; D004040:Dietary Carbohydrates; D002523:Edible Grain; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D008572:Menarche; D011627:Puberty; D012741:Sexual Maturation; D011795:Surveys and Questionnaires
chemical_list: D004040:Dietary Carbohydrates