Table 1 Description of sample. Numbers are means ± standard deviations, medians (IQRs) or numbers (%)
|  | Total sample (n = 72) | 1sttertile of PAL (n = 24) | 2ndtertile of PAL (n = 24) | 3rdtertile of PAL (n = 24) |
|---|---|---|---|---|
|  |  | (1.15 – 1.38) | (1.40 – 1.51) | (1.52 – 2.21) |
Age, years | 65 ± 7 | 65 ± 7 | 66 ± 7 | 65 ± 7 |
Gender, n male/female | 28/44 | 8/16 | 10/14 | 10/14 |
Current smoker, n (%) | 20 (28%) | 7 (29%) | 7 (29%) | 6 (25%) |
Dyspnea, mMRC | 3 (1) | 3 (1) | 2.5 (2) | 2 (2) |
FEV1, percent of predicted | 43 ± 16 | 35 ± 11 | 42 ± 16 | 52 ± 14 |
FVC, percent of predicted | 83 ± 20 | 73 ± 19 | 85 ± 21 | 92 ± 20 |
GOLD grade 1/2/3/4, n | 1/18/37/16 | 0/1/15/8 | 0/6/11/7 | 1/11/11/1 |
BMI, kg/m2 | 24.4 ± 4.7 | 23.2 ± 5.0 | 23.9 ± 4.0 | 26.0 ± 4.8 |
FFMI, kg/m2 | 15.7 ± 2.3 | 15.0 ± 2.4 | 15.5 ± 1.9 | 16.6 ± 2.3 |
FFM depleted, n (%) | 35 (49%) | 17 (71%) | 12 (50%) | 6 (25%) |
Quadriceps strength, kg | 31.3 ± 11.2 | 27.2 ± 10.7 | 30.2 ± 10.0 | 36.3 ± 11.3 |
Quadriceps strength, percent of predicted | 81.8 ± 24.8 | 73.8 ± 28.0 | 80.8 ± 20.8 | 90.9 ± 23.1 |
Quadriceps weakness, n (%) | 15 (21%) | 6 (25%) | 5 (21%) | 4 (17%) |
Walking speed, self-selected (m/s) | 1.02 ± 0.23 | 0.89 ± 0.21 | 1.00 ± 0.23 | 1.14 ± 0.17 |
Walking speed, maximal (m/s) | 1.54 ± 0.30 | 1.42 ± 0.29 | 1.57 ± 0.29 | 1.66 ± 0.30 |
Low self-selected walking speed, n (%) | 30 (42%) | 15 (63%) | 11 (46%) | 4 (17%) |
CRP | 1.86 ± 2.85 | 2.38 ± 3.24 | 1.47 ± 2.55 | 1.85 ± 2.75 |