Table 1.
Profile of the subjects (829 men)
| Age (years)a | 37.8 ± 6.7 |
| Height (cm)a | 169.9 ± 6.0 |
| Weight (kg)a | 67.8 ± 10.1 |
| BMI (kg/m2)a | 23.4 ± 3.1 |
| BMD (g/m2)a | 0.557 ± 0.059 |
| Bone metabolism markers | |
| DPD (nmol/mmol Cr)b | 3.5 (10.0) |
| BAP (U/L)b | 24.3 (80.7) |
| Lifestyle | |
| Past history of exercise (%) | |
| Yes | 80.0 |
| No | 20.0 |
| Current exercise (%) | |
| ≤2 days/week | 89.9 |
| ≥3 days/week | 10.1 |
| Smoking status (%) | |
| Yes | 58.1 |
| No | 41.9 |
| Alcohol intake (%) | |
| Yes | 68.1 |
| No | 31.9 |
Past history of exercise was determined from exercise habits until the age of 20 years
BMI body mass index, BMD bone mineral density, DPD deoxypyridinoline, BAP bone alkaline phosphatase
aValues are mean ± SD
bValues are median (interquartile range)