Journal of Bone and Mineral Metabolism

, Volume 12, Issue 1, pp 9–16

Vertebral bone mineral density of the elderly in the urban community by mobile DXA

  • Takao Suzuki
  • Hiroshi Haga
  • Seiji Yasumura
  • Harumi Nagai
  • Hidenori Amano
  • Hiroshi Shibata


The present paper describes a population survey of bone mineral density (BMD) on the third lumbar vertebra (L3) using dual X-ray absorptiometry fixed in a van (mobile DXA) with lateral projection. Subjects were 387 persons aged 65 to 84 years living in Koganei City, a western suburb of Tokyo. This is the baseline survey of the 10-year project “Longitudinal Interdisciplinary Study on Aging” supported by Tokyo Metropolitan Institute of Gerontology (TMIG-LISA).

As for the pattern of age-related BMD calculated in the range-of-interest (ROI) being set in the center of vertebral body to eliminate the posterior segment of vertebra and/or secondary hyperostotic changes with aging, the mean BMD of L3 declined in females from 0.514±0.121g/cm2 (mean±standard deviation) in age-group 65–69 to 0.377±0.137 g/cm2 in age-group 80–84. In males, it showed a decrease from 0.731±0.155 in 65–69 to 0.613±0.158 in 75–79 but a slight (insignificant) increase at age-group 80–84. There were significant differences of mean BMD between males and females in each age-group and in average. BMD was significantly associated with age (negatively) and body mass index (positively) in the multiple regression analysis.

Key words

Bone mineral density Mobile DXA Community elderly Epidemiology TMIG-LISA 


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Copyright information

© Japanese Society of Bone Metabolism Research 1994

Authors and Affiliations

  • Takao Suzuki
    • 2
  • Hiroshi Haga
    • 1
  • Seiji Yasumura
    • 1
  • Harumi Nagai
    • 1
  • Hidenori Amano
    • 1
  • Hiroshi Shibata
    • 1
  1. 1.Community HealthTokyo Metropolitan Institute of GerontologyJapan
  2. 2.Department of EpidemiologyTokyo Metropolitan Institute of GerontologyTokyoJapan

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