Relationships of Change in Radius Bone Mineral Density for Seven Years of Working Women around Thirty Years Old with Lifestyle, Body Measurement Data and Laboratory Data

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  • KOMIYA Yasuhiro
    Division of Public Health, Department of Social Medicine, Faculty of Medicine, University of Miyazaki
  • NAKAO Hiroyuki
    Division of Public Health, Department of Social Medicine, Faculty of Medicine, University of Miyazaki
  • KURODA Yoshiki
    Division of Public Health, Department of Social Medicine, Faculty of Medicine, University of Miyazaki
  • ARIZONO Katsuyuki
    Division of Public Health, Department of Social Medicine, Faculty of Medicine, University of Miyazaki
  • NAKAHARA Ai
    Division of Public Health, Department of Social Medicine, Faculty of Medicine, University of Miyazaki
  • MIYAUCHI Mari
    Division of Public Health, Department of Social Medicine, Faculty of Medicine, University of Miyazaki
  • KATOH Takahiko
    Division of Public Health, Department of Social Medicine, Faculty of Medicine, University of Miyazaki

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Other Title
  • ３０歳前後の就労女性における７年間の橈骨骨密度変化とその影響要因の解析
  • 30サイ ゼンゴ ノ シュウロウ ジョセイ ニ オケル 7ネンカン ノ トウコツ コツミツド ヘンカ ト ソノ エイキョウ ヨウイン ノ カイセキ

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Objectives: A longitudinal study was conducted to investigate the relationships of the change in radius bone mineral density for seven years with lifestyle, body measurement data and laboratory data.<br>Methods: The subjects of this study were 191 female employees working in an LSI manufacturing factory in Japan. Bone mineral density was measured on the radius of their nondominant side using DXA (dual energy X-ray absorptiometry) in 1995 and 2002. Other medical examinations were performed at the same time. Multiple regression analysis was also performed with the change in radius bone mineral density as the dependent variable.<br>Results: As a result of the multiple regression analysis, a significant positive correlation was observed between the change in body mass index (BMI) and the change in bone mineral density among the subjects aged 30 years and over and those under 30 years. A significant positive correlation was observed between daily milk intake and the change in bone mineral density among those aged under 30 years.<br>A significant negative correlation was observed between daily alcohol intake and the change in bone mineral density among those aged under 30 years, and also between parity and the change in bone mineral density among those aged 30 years and over.<br>Conclusions: BMI, parity, daily milk intake and daily alcohol intake are considered as significant factors that contribute to a change in bone mineral density. It is necessary that the recommended timing for medical examination be set according to age, and that a well-balanced guidance be provided from young adulthood.

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