Table 3.
Univariate analysis of change in normalized quadriceps strength from baseline to 1 and 6 months regressed on known covariates (3a) and radiographic measures (3b).
| 3a. Covariates | |||||
|---|---|---|---|---|---|
| 1 month | Change in Normalized Quadriceps strength (N-m/kg) | 6 month | Change in Normalized Quadriceps strength (N-m/kg) | ||
| Beta Coefficient | p-value | Beta Coefficient | p-value | ||
| Age | 0.014 | 0.0034** | Age | <0.001 | 0.95 |
| Sex | −0.07 | 0.43 | Sex | −0.32 | 0.0015** |
| BMI | −0.03 | 0.0007** | BMI | −0.03 | 0.0005** |
| Quadriceps Activation | 0.01 | <0.0001** | Quadriceps Activation | 0.01 | 0.0031** |
| 3b. Radiographic measures | |||||
|---|---|---|---|---|---|
| 1 month | Change in Normalized Quadriceps strength (N-m/kg) | 6 month | Change in Normalized Quadriceps strength (N-m/kg) | ||
| Beta Coefficient | p-value | Beta Coefficient | P-value | ||
| MA | 0.09 | 0.19 | MA | 0.08 | 0.41 |
| DF | −0.25 | 0.0009** | DF | −0.32 | 0.0007** |
| PF | −0.03 | 0.67 | PF | −0.06 | 0.53 |
| PT | −0.06 | 0.41 | PT | −0.09 | 0.34 |
*
indicates variables found to have p<0.2 and included in hierarchical model building.
**
indicate variables found to significantly (p<0.05) relate to quadriceps strength change in univariate regression.