AMCoR Asahikawa Medical College

AMCoR:Asahikawa Medical University Collection and Research (旭川医科大学学術成果リポジトリ)は、本学で生産された電子的な知的生産物(学術雑誌論文の原稿・教材・学術資料など)を保存し、原則的に無償で発信するためのインターネット上の保管庫です。


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ID 21432549
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タイトル Association between lifestyle habits and bone mineral density in Japanese juveniles
中木, 良彦 (Nakagi, Yoshihiko)
Ito, Toshihiro
Hirooka, Kenzo
Sugioka, Yoshihiko
Endo, Hitoshi
Saijo, Yasuaki
Imai, Hirohisa
Takeda, Hidekatsu
Kayama, Fujio
Sasaki, Satoshi
Yoshida, Takahiko
Environmental Health and Preventive Medicine Vol.15, No.4  (2010. 7) ,p.222- 228
DOI 10.1007/s12199-009-0131-8
抄録 Objectives : We explored the relationship between bone mineral density (BMD) and lifestyle in juveniles to identify factors leading to higher peak bone mass and prevention of osteoporosis in later life. Methods : Juveniles (1,364 students: 770 boys and 594 girls, aged 6–18 years) attending school in Hokkaido prefecture, Japan, were asked to complete a brief self-administered diet history questionnaire for 10-year-olds (BDHQ10y) providing information about personal history, lifestyle, and intake of nutritional elements. In addition, BMD and grip strength were measured. We analyzed the relationship between BMD and lifestyle factors. Results : The difference in BMD for boys was larger among the junior and senior high school groups. The difference in BMD for girls was larger among older elementary and later school children. Anthropometric variables and grip strength were strongly correlated with BMD. Having a nap-time routine was significantly correlated with BMD, but sleep time and sports club activities were not. BMD among juveniles who attained secondary sexual characteristics was significantly higher than that of juveniles of the same age who had not attained these characteristics. Calcium intake was significantly lower in senior high school students compared with other grades. Consumption of milk by senior high school boys and junior high school girls was weakly correlated with BMD. Conclusions : Our findings encourage educational interventions to counsel students to avoid weight loss and calcium deficiency. This effective intervention should begin before the higher elementary school, when juveniles have the greatest likelihood for preventing lower peak bone mass and osteoporosis.

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