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Sedentary behavior does not predict low BMD nor fracture—population-based Canadian Multicentre Osteoporosis Study
Sedentary behavior is not linked to low bone density or fractures in a Canadian population study
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Abstract
Increased sitting time was associated with lower baseline femoral neck (BMD) in a cohort of 8,272 participants.
- Women with higher levels of sitting had lower adjusted femoral neck BMD compared to those with the least sitting.
- Men in the third quartile of sitting also showed lower adjusted femoral neck BMD than those in the first quartile.
- No significant relationship was found between baseline or stable sitting and changes in BMD over ten years.
- There was no increased risk of fragility fractures associated with levels of sitting over the ten-year period.
- The findings suggest that habitual sitting behavior may impact baseline bone health but not fracture risk or BMD loss over time.
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Key numbers
Lower in third and fourth quartiles vs. first quartile
Adjusted FN Decrease in Women
Comparison of femoral neck across quartiles in women.
Lower in third quartile vs. first quartile
Adjusted FN Decrease in Men
Comparison of femoral neck across quartiles in men.
0.92 (0.74–1.15) for clinical fragility fractures
No Association with Fracture Risk
Hazard ratio for clinical fragility fractures across quartiles in women.