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Trabecular bone scores and lumbar spine bone mineral density of US adults: comparison of relationships with demographic and body size variables
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8 2016
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Source: Osteoporos Int. 27(8):2467-2475
Details:
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Alternative Title:Osteoporos Int
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Personal Author:
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Description:Background:
There are limited data on demographic and body size relationships for trabecular bone score (TBS), a new approach to assess bone microarchitecture.
Purpose:
Compare demographic patterns and correlations with body size (body mass index (BMI), weight, waist circumference, total body fat, trunk fat, trunk lean) between TBS and lumbar spine bone mineral density (LSBMD) for adults age ≥ 20 years from the National Health and Nutrition Examination Survey (NHANES) 2005–2008 with BMI in the optimal range for TBS (15–37 kg/m2).
Methods:
LSBMD, TBS, body fat and lean were obtained by dual-energy X-ray absorptiometry. Weight, height and waist circumference were measured. BMI was calculated from height and weight.
Results:
Sex differences in TBS varied by age and race/ethnicity (psex X age interaction and psex X race/ethnicity interaction < 0.001). In the majority of the nine demographic subgroups examined, TBS either did not differ by sex (four subgroups), or was significantly higher in women (three subgroups). TBS differences by race/ethnicity were inconsistent in men; in women, non-Hispanic whites (NHW) had higher TBS than non-Hispanic blacks (NHB) or Mexican Americans (MA) in all age groups. In contrast, LSBMD was either significantly higher in men (five subgroups) or did not differ by sex (four subgroups). Race/ethnic differences in LSBMD were consistent across age and sex (NHB >NHW>MA). All body size variables were negatively related to TBS but positively related to LSBMD.
Conclusion:
Demographic patterns and body size relationships differed between TBS and LSBMD. In some cases, they identified different at-risk subgroups (subgroup with lowest values).
Mini-abstract
This study examines demographic patterns and body size relationships in trabecular bone score and lumbar spine BMD of US adults from NHANES 2005–2008.
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Pubmed ID:26952009
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Pubmed Central ID:PMC7593898
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