Table 1: Descriptive data (all values mean ± standard deviation unless otherwise indicated) of the study population undergoing CPET including anthropometrics, spirometry and CPET measurements. BMI-body mass index, VO2-peak oxygen consumption (ml/kg/min), FEV1%-Percent predicted Forced expiratory volume in first second, FVC%-Percent predicted Forced Vital Capacity, FEF25-75%-Percent predicted Forced midexpiratory flow, PEF%-Percent predicted Peak expiratory flow, VE/VCO2- minute ventilation/carbon dioxide production.
ALL N = 345 | Ventilatory reserve ≤ 15% N = 76 | Ventilatory reserve ≤ 15% & VO2 < 20 ml/kg/min N = 52 | |
Female n (%) | 147 (42.6%) | 27 (35.5%) | 26 (50.0%) |
Age | 59.2 ± 15.7 | 62.3 ± 12.8 | 65.0 ± 11.2 |
BMI (kg/m2) | 29.3 ± 10.2 | 28.4 ± 5.7 | 29.0 ± 6.2 |
VO2 (ml/kg/min) | 18.7 ± 7.1 | 19.7 ± 8.2 | 15.3 ± 3.0 |
Breathing reserve% | 30.3 ± 19.7 | 1.5 ± 12.2 | 0.9 ± 13.3 |
FEV1% | 78.5 ± 21.7 | 59.1 ± 21.1 | 51.1 ± 18.1 |
FVC% | 86.9 ± 18.3 | 76.2 ± 20.9 | 69.6 ± 18.3 |
FEF25-75% | 68.6 ± 38.5 | 38.4 ± 28 | 30.3 ± 24.5 |
PEF% | 85.5 ± 23.6 | 72.3 ± 28.3 | 64.1 ± 27.4 |
VE/VCO2 | 32.4 ± 6.3 | 33.5 ± 5.9 | 34.8 ± 5.2 |