Table 7. Stepwise Multiple Regression predicting hip bone mineral density (BMD) from isokinetic leg strength variables in combined age groups.
| BMD Site |
Predictor Variable |
β |
SEE |
R2 |
| Total Body |
Quad PT 60°·s-1 |
.404 |
.116 |
.151 *** |
|
Quad PT 180°·s-1 |
.358 |
.119 |
.116 * |
|
Quad PT 240°·s-1 |
.347 |
.119 |
.108 * |
| Spine |
none |
|
|
|
| Femoral Neck |
Quad PT 60°·s-1 |
.413 |
.118 |
.448 *** |
|
Age |
-.344 |
|
|
|
Quad PT 180°·s-1 |
.470 |
.115 |
.471 *** |
|
Age |
-.294 |
|
|
|
Quad PT 240°·s-1 |
.486 |
.115 |
.473 *** |
|
Age |
-.273 |
|
|
| Trochanter |
Ham PT 60°·s-1 |
.468 |
.150 |
.208 *** |
|
Ham PT 180°·s-1 |
.481 |
.149 |
.220 *** |
|
Ham PT 240°·s-1 |
.413 |
.155 |
.159 *** |
| Total Hip |
Ham PT 60°·s-1 |
.337 |
.118 |
.371 *** |
|
Quad PT 60°·s-1 |
.328 |
|
|
|
Quad PT 180°·s-1 |
.598 |
.121 |
.348 *** |
|
Quad PT 240°·s-1 |
.596 |
.121 |
.346 *** |
PT = Peak Torque. Independent variables: age; Quad, Quadriceps PT; and Ham, Hamstrings PT.* p < 0.01*** p < 0.001.
