Outcome | Group | Baseline | 6-month | P value |
---|---|---|---|---|
 |  | β(CI) | β(CI) |  |
Relative aerobic capacity (O2ml·kg·min-1) | Intervention | 0 (reference) | 4.8 (3.0-6.5) | (trt × time) = 0.02 |
 | Control | 6.0 (4.1-8.0) | 7.9 (5.7-10.2) |  |
 |  | OR (CI) | OR (CI) |  |
Fitness level > 23 O2ml·kg·min-1 | Intervention | 1 (reference) | 3.7 (1.8-7.8) | (trt × time) = 0.02 |
 | Control | 5.0 (2.3-10.9) | 5.6 (2.4-13.2) |  |