Effects of Physical Characteristics and Dietary Habits on Bone Mineral Density in Adolescent Girls

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概要

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• In the health management of bone, of most importance is how to spend the period until peak bone mass, that is appropriate self management for bone health. Therefore, we evaluated the effects of physical characteristics and dietary habits on the bone mineral density (BMD) of the second metacarpal bone (∑ GS/D: BMD) by the digital image processing method (DIP) in 197 healthy adolescent girls (Japanese students at a junior high school, aged 12-15 y), an im-portant period of physical and bone growth. Concerning the physical characteristics of the subjects according to age group, body height in each age group was higher than the standard values for Japanese according to age, but body weights in the 14-year-old and 15-year-old groups were significantly lower than the standard values for Japanese. Compared with the standard BMD values for Japanese according to age, BMD in the subjects was high in the 12-year-old, 13-year-old and 14-year-old groups but low in the 15-year-old group (-7.3%). Concerning the nutritional state, energy, calcium (Ca), and iron intakes were insufficient in every age group. BMD relative to the standard BMD value for Japanese (standard value was regarded as 0%) was evaluated according to the ingestion frequency of Ca-rich foods. The relative BMD value (%) increased with the ingestion frequency of Ca-rich foods. These results suggest that maintenance of an appropriate physique and adequate intake of nutrients such as Ca are important for bone growth during adolescence. Active promotion of educational guidance mainly on the effects of diet on bone health in adolescents is necessary.

• 財団法人 学会誌刊行センターの論文

著者

• Sato Kazuto

  Department Of Chemical Engineering Faculty Of Engineering Iwate University

• Ezawa Ikuko

  Department Of Food And Nutrition Japan Women's University

• Tsukahara Noriko

  Department Of Clinical Laboratory Saiseikai Utsunomiya Hospital

• EZAWA Ikuko

  Department of Food and Nutrition, School of Home-Economics, Japan Women's University

• TSUKAHARA Noriko

  Department of Food and Nutrition, School of Home-Economics, Japan Women's University

• SATO Kazuto

  Department of Food and Nutrition, School of Home-Economics, Japan Women's University

• EZAWA Ikuko

  Department of Biochemistry, Faculty of Dentistry, Tokyo Medical and Dental University

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