Table 2.
Test results before PR and correlations
| Test parameters | Correlation with 6MST
|
Correlation with 6MWT
|
|||
|---|---|---|---|---|---|
| All (n=91), mean ± SD | r | P-value | r | P-value | |
| 6MST (steps) | 488±149 | NA | NA | 0.56 | <0.0001 |
| 6MWT (m) | 406±86 | 0.56 | <0.0001 | NA | NA |
| Power-VT (W) | 52±23 | 0.36 | <0.005 | 0.32 | 0.009 |
| VO2-VT (mL/min/kg) | 11.4±3.3 | 0.26 | NS | 0.35 | 0.001 |
| Power-max (W) | 86±33 | 0.46 | <0.0001 | 0.39 | 0.0002 |
| VO2max (mL/min/kg) | 15.2±4.8 | 0.39 | <0.005 | 0.38 | 0.03 |
Abbreviations: PR, pulmonary rehabilitation; 6MST, 6-minute stepper test; 6MWT, 6-minute walk test; VO2-VT, oxygen consumption at ventilatory threshold; VO2 max, oxygen consumption at maximum effort; Power-VT, Power at ventilatory threshold; Power-max, Power at maximum effort; NA, not applicable; NS, not significant.