Determination of bone mineral density of the hip and spine in human pedigrees by genetic and life-style factors

Hong Wen Deng, Wei Min Chen, Theresa Conway, Yan Zhou, K. Michael Davies, Mary Ruth Stegman, Hongyi Deng, Robert R. Recker

Research output: Contribution to journalArticle

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Abstract

In 40 human pedigrees with 563 subjects, we evaluated the contribution of genetic and life-style factors (exercise, smoking, and alcohol consumption) and the interactions between non-genetic factors in determining bone mineral density (BMD) of the hip and spine. In our analysis, we adjusted for age, weight, height, menopausal status in females, life-style factors, and the significant interactions among these factors. For the spine and hip BMD, heritabilities (h2) (± SE) were, respectively, 0.68 (0.21) and 0.86 (0.28) in males and 0.64 (0.13) and 0.67 (0.14) in females. Exercise had significant beneficial effects for male spine BMD and female hip BMD. Alcohol consumption experienced in our sample had significant beneficial effects on hip BMD in both sexes. Although the main effect of smoking was not significant, there were significant interaction effects between smoking and other important factors (e.g., exercise, weight, alcohol consumption). For example, for female spine BMD, exercise had significant beneficial effects in smokers; however, its effect in non-smokers was non-significant. This result indicates that exercise may reduce deleterious effects of smoking (if any) on BMD, but may have minor effects in increasing BMD in non-smokers. The various interaction effects among risk factors explicitly revealed here for the first time indicate that the detailed effects and direction of individual risk factors may depend on the presence and magnitude of other factors. Weight invariably affected BMD of the hip and spine in both sexes. Age effects were significant for hip BMD, but not for male spine BMD. (C) 2000 Wiley-Liss, Inc.

Original languageEnglish
Pages (from-to)160-177
Number of pages18
JournalGenetic Epidemiology
Volume19
Issue number2
DOIs
StatePublished - 2000

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Medical Genetics
Pedigree
Bone Density
Life Style
Hip
Spine
Pelvic Bones
Smoking
Alcohol Drinking
Weights and Measures

All Science Journal Classification (ASJC) codes

  • Genetics(clinical)
  • Epidemiology

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Determination of bone mineral density of the hip and spine in human pedigrees by genetic and life-style factors. / Deng, Hong Wen; Chen, Wei Min; Conway, Theresa; Zhou, Yan; Michael Davies, K.; Stegman, Mary Ruth; Deng, Hongyi; Recker, Robert R.

In: Genetic Epidemiology, Vol. 19, No. 2, 2000, p. 160-177.

Research output: Contribution to journalArticle

Deng, Hong Wen ; Chen, Wei Min ; Conway, Theresa ; Zhou, Yan ; Michael Davies, K. ; Stegman, Mary Ruth ; Deng, Hongyi ; Recker, Robert R. / Determination of bone mineral density of the hip and spine in human pedigrees by genetic and life-style factors. In: Genetic Epidemiology. 2000 ; Vol. 19, No. 2. pp. 160-177.
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