Table 2.
Component loading matrix after Varimax rotation.
| a) sexes combined | ||||
|---|---|---|---|---|
| PC1 | PC2 | PC3 | PC4 | |
| Bone strength | Femoral cross-sectional geometry | Heel ultrasound | Femoral shaft stability | |
| Total body BMD | 88 | −11 | 24 | −15 |
| Femoral Neck BMD | 84 | −5 | 19 | −20 |
| Trochanter BMD | 82 | −11 | 24 | −7 |
| LS BMD | 63 | −2 | 29 | −1 |
| Heel ultrasound/BUA | 30 | 2 | 89 | 4 |
| Heel ultrasound/SOS | 30 | 2 | 90 | 0 |
| Femoral Neck Length | 8 | 62 | −2 | −7 |
| Femoral Neck-Shaft Angle | −10 | −15 | 9 | 50 |
| Narrow Neck Outer diameter | −10 | 89 | 4 | 5 |
| Narrow Neck CSA | 81 | 34 | 10 | −11 |
| Narrow Neck Section Modulus | 49 | 72 | 7 | −6 |
| Narrow Neck Buckling Ratio | −35 | 10 | 9 | 48 |
| Shaft Outer diameter | −13 | 91 | −1 | −6 |
| Shaft CSA | 84 | 9 | 6 | 23 |
| Shaft Section modulus | 59 | 61 | 1 | 20 |
| Shaft Buckling Ratio | −55 | 67 | −5 | −16 |
| Leg Lean mass | 22 | −1 | −17 | 69 |
| Eigenvalue | 5.75 | 3.49 | 1.38 | 1.15 |
| Explained variance (%) | 33.9 | 20.5 | 8.15 | 6.75 |
| b) Men | |||||
|---|---|---|---|---|---|
| PC 1 | PC 2 | PC 3 | PC 4 | PC 5 | |
| Bone strength | Femoral cross-sectional geometry | Heel ultrasound | Femoral shaft stability | Femoral neck geometry | |
| Total body BMD | 88 | −12 | 27 | 9 | −10 |
| Femoral Neck BMD | 88 | −6 | 19 | 2 | −4 |
| Trochanter BMD | 82 | −12 | 26 | 13 | −7 |
| LS BMD | 65 | 3 | 27 | 1 | 18 |
| Heel ultrasound/BUA | 26 | 0 | 91 | 6 | −3 |
| Heel ultrasound/SOS | 28 | 2 | 91 | 3 | −1 |
| Femoral Neck Length | 1 | 49 | 6 | 12 | − 57 |
| Femoral Neck-Shaft Angle | −8 | −5 | 0 | 7 | 89 |
| Narrow Neck Outer diameter | −12 | 89 | 5 | 3 | −4 |
| Narrow Neck CSA | 84 | 30 | 12 | 13 | 1 |
| Narrow Neck Section Modulus | 52 | 74 | 8 | 8 | −2 |
| Narrow Neck Buckling Ratio | − 50 | 11 | 14 | 22 | 10 |
| Shaft Outer diameter | −10 | 91 | −4 | −7 | −13 |
| Shaft CSA | 68 | 0 | 19 | 54 | −11 |
| Shaft Section modulus | 45 | 61 | 9 | 40 | −13 |
| Shaft Buckling Ratio | −42 | 73 | −14 | −32 | −4 |
| Leg Lean mass | 1 | −4 | 1 | 83 | 4 |
| Eigenvalue | 5.98 | 3.63 | 1.84 | 1.30 | 1.09 |
| Explained variance (%) | 33.2 | 20.2 | 10.2 | 7.2 | 6.0 |
| c) Women | ||||
|---|---|---|---|---|
| PC 1 | PC 2 | PC 3 | PC 4 | |
| Bone strength | Femoral cross-sectional geometry | Heel ultrasound | Femoral shaft stability | |
| Total body BMD | 87 | −13 | 24 | −16 |
| Femoral Neck BMD | 83 | −5 | 20 | −21 |
| Trochanter BMD | 80 | −12 | 25 | −6 |
| LS BMD | 64 | −3 | 29 | 1 |
| Heel ultrasound/BUA | 30 | 1 | 89 | 3 |
| Heel ultrasound/SOS | 30 | 1 | 89 | −1 |
| Femoral Neck Length | 7 | 63 | −2 | −1 |
| Femoral Neck-Shaft Angle | −5 | −8 | 11 | 56 |
| Narrow Neck Outer diameter | −7 | 90 | 2 | 3 |
| Narrow Neck CSA | 77 | 38 | 8 | −18 |
| Narrow Neck Section Modulus | 49 | 70 | 5 | −11 |
| Narrow Neck Buckling Ratio | −28 | 9 | 6 | 54 |
| Shaft Outer diameter | −13 | 91 | 0 | −3 |
| Shaft CSA | 87 | 12 | 2 | 15 |
| Shaft Section modulus | 63 | 58 | −3 | 16 |
| Shaft Buckling Ratio | − 59 | 65 | −3 | −10 |
| Leg Lean mass | 20 | −4 | −27 | 64 |
| Eigenvalue | 5.69 | 3.48 | 1.47 | 1.15 |
| Explained variance (%) | 33.45 | 20.46 | 8.64 | 6.75 |
values are multiplied by 100 and rounded to the nearest integer.
The highest weights (≥0.5) are marked in bold.