Table 1.
Participants’ characteristics.a
| Validity cohort | Validity and reliability cohort | |
|---|---|---|
| n | 92 | 46 |
| Gender (%men) | 67 | 78 |
| Age (years) | 65 ± 8 | 67 ± 6 |
| BMI (kg/m2) | 25 ± 6 | 26 ± 4 |
| FEV1/FVC | 0.41 ± 0.12 | 0.50 ± 0.14 |
| FEV1 (%pred) | 45 ± 15 | 65 ± 21 |
| 6MWT (m) | 426 ± 129 | 515 ± 136 |
| 6MWT (%pred) | 66 ± 19 | 81 ± 19 |
| Quadriceps force (%pred)b | 80 ± 35 | 89 ± 20 |
BMI: body mass index; FEV1: forced expiratory volume in 1 second; FVC: forced vital capacity; 6MWT: 6-minute walk test.
aData are presented as mean ± SD. One patient from the first cohort and three from the second did not perform 6MWT. One patient from the second cohort did not perform muscle force assessment during visit 1 due to leg pain after completion of the 6MWT.
bPercentage of predicted was calculated for quadriceps force measured by Biodex.