Independent variable | Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | Model 6 |
---|---|---|---|---|---|---|
Block 1 | Â | Â | Â | Â | Â | Â |
Sex |  − 0.13* |  − 0.14* |  − 0.15* |  − 0.12* |  − 0.13* |  − 0.16** |
Block 2 | Â | Â | Â | Â | Â | Â |
PA level, cpm |  |  − 0.02 |  − 0.01 | 0.02 | 0.02 | 0.03 |
Use of exercise monitoring tools | Â | 0.21*** | 0.21*** | 0.15** | 0.16** | 0.15** |
Exercise arena: organized sports |  | 0.13* | 0.13* | 0.002 |  − 0.01 | 0.01 |
Exercise arena: fitness training centre |  | 0.04 | 0.03 |  − 0.003 |  − 0.01 | 0.005 |
Block 3 | Â | Â | Â | Â | Â | Â |
BMI, kg/m2 | Â | Â | 0.07 | 0.07 | 0.10 | 0.02 |
Block 4 | Â | Â | Â | Â | Â | Â |
BREQ amotivation | Â | Â | Â | 0.06 | 0.06 | 0.07 |
BREQ external regulation |  |  |  |  − 0.02 |  − 0.01 |  − 0.03 |
BREQ introjected regulation | Â | Â | Â | 0.44*** | 0.49*** | 0.46*** |
BREQ identified regulation | Â | Â | Â | 0.15 | 0.10 | 0.13 |
BREQ intrinsic motivation |  |  |  |  − 0.09 |  − 0.14 |  − 0.13 |
Block 5 | Â | Â | Â | Â | Â | Â |
HRQOL physical health | Â | Â | Â | Â | 0.06 | 0.07 |
HRQOL psychological health and wellbeing |  |  |  |  |  − 0.09 |  − 0.02 |
HRQOL parent relations and autonomy | Â | Â | Â | Â | 0.14* | 0.14* |
HRQOL social support and peers | Â | Â | Â | Â | 0.10 | 0.05 |
HRQOL school environment | Â | Â | Â | Â | 0.07 | 0.04 |
Block 6 | Â | Â | Â | Â | Â | Â |
Weight loss attempts past 12Â months | Â | Â | Â | Â | Â | 0.22*** |
Weight gain attempts past 12 months |  |  |  |  |  |  − 0.004 |
Adjusted R2 | 0.01 | 0.06 | 0.06 | 0.28 | 0.31 | 0.34 |