Bivariate relation of bone strength index (BSI) to independent variables for the whole sample of adolescent girls (n = 40)
| BSI (g/cm3/mm4) | |
|---|---|
| *Correlation is significant at the 0.01 level (two tailed). | |
| CSA, Cross sectional area. | |
| Hours of physical activity a week | 0.678* |
| Total muscle CSA (mm2) | 0.619* |
| Lean tissue mass (kg) | 0.607* |
| Extensor muscle CSA (mm2) | 0.589* |
| Flexor muscle CSA (mm2) | 0.427* |
| Calcium (mg) | 0.302 |
| Oestrogen (pmol/l) | 0.120 |
| Plantar flexion strength (N.m) | 0.078 |
| Energy intake (kJ) | 0.041 |
| Age at menarche (years) | 0.020 |
| Dorsiflexion strength (N.m) | 0.013 |
| Fat mass (kg) | −0.068 |