Change in Bone Mineral Density in Girls during Puberty and Analysis of The Correlated Influence Factors
- VernacularTitle:青春期女性骨密度变化及相关影响因素分析
- Author:
Jinbiao DAI
;
Suzhen ZHANG
;
Wenhe CHEN
- Publication Type:Journal Article
- Keywords:
puberty, BMD, height, weight, menarche, exercise
- From:Chinese Journal of Sports Medicine
1983;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the bone mineral density(BMD)and the correlated influence factors ingirls. Methods BMD and partial physical development variables of 714 girls, aged 9 to 16, were examined in Guangdong and Guangxi province and a questionnaire was administered to all subjects to determine their milk intake, physical activity, menarche, and regularity of menstruation. Results BMD in girls increased by 4.4% at age of 9～12, increased by 6.0% at age of 12～14, and increased by 2.5% at age of 14～16. Compared with girls having less than six-hour outdoor exercise, those having more than six-hour outdoor exercise revealed higher BMD levels (P200ml/day) might be effective for promoting BMD of girls during puberty.
