Table 1.
Baseline characteristics
| Number of participants | 351 |
| Age (years), mean (SD) | 72.8 (2.3) |
| Weight (kg), mean (SD) | 69.8 (12.1) |
| Height (cm), mean (SD) | 161.8 (5.9) |
| BMI (kg/m2), mean (SD) | 26.7 (4.5) |
| Gait speed (m/s), mean (SD) | 1.4 (0.3) |
| One-leg standing timea (s), median (IQR) | 20 (22) |
| Femoral neck T-scoreb (SD), mean (SD) | −1.8 (0.9) |
| Previous fracture (%) | 41.0 |
| Parent fractured hip (%) | 9.5 |
| Current smoking (%) | 16.2 |
| Systemic glucocorticoid treatment (%) | 1.7 |
| Rheumatoid arthritis (%) | 4.6 |
| Secondary osteoporosisc (%) | 16.8 |
| Alcohol >3 units/day (%) | 0 |
| Serum 25-OH vitamin D (nmol/l), mean (SD) | 93.3 (33.7) |
aStanding time on one leg with eyes open. Maximum time of two attempts on each leg
bBone mineral density measured with DXA at the left femoral neck, described as number of standard deviations from mean of the young adult NHANES III reference population
cSecondary osteoporosis as defined according to FRAX, see “Methods” section