Table 3.
ANCOVA analysing the performance of Wingate anaerobic and incremental knee-extension tests during MRI spectroscopy adjusting for qCSA and height
| df | Significancy (p) | partial Eta-squared | |
|---|---|---|---|
| Wingate test peak power (W) | |||
| Model | 3 | < 0.000 | .704 |
| CF/non-CF | 1 | 0.230 | .125 |
| Cross-sectional area M. quadriceps (cm3) | 1 | < 0.000 | .301 |
| Height (cm) | 1 | 0.005 | .188 |
| Wingate test mean power (W) | |||
| Model | 3 | < 0.000 | .800 |
| CF/non-CF | 1 | 0.900 | .072 |
| Cross-sectional area M. quadriceps (cm3) | 1 | < 0.000 | .510 |
| Height (cm) | 1 | 0.001 | .246 |
| Wingate test power drop (%) | |||
| Model | 3 | 0.001 | .361 |
| CF/non-CF | 1 | 0.230 | .037 |
| Cross-sectional area M. quadriceps (cm3) | 1 | 0.027 | .119 |
| Height (cm) | 1 | 0.252 | .034 |
| Maximal work load during incremental test in MRI (kg) | |||
| Model | 3 | < 0.000 | .600 |
| CF/non-CF | 1 | 0.078 | .002 |
| Cross-sectional area M. quadriceps (cm3) | 1 | < 0.005 | .183 |
| Height | 1 | 0.001 | .247 |
Results of general linear models with Wingate test performance and maximal work load during MRI spectroscopy as dependent variable and disease status, height and cross sectional area of M. quadriceps as independent variables in the total cohort (n = 43). Effects of the respective factors on the model are presented as partial eta squared