Table 1

Mean (SD) baseline anthropometric and pulmonary function data of study subjects and subgroups defined by their end expiratory lung volumes during exercise

All (n = 20)Euvolumics (n = 12)Hyperinflators (n = 8)
*p<0.05, hyperinflators v euvolumics.
Age (years)68.6 (7.0)65.2 (8.5)70.9 (5.0)
BMI (kg/m2)25.5 (2.8)27.5 (3.0)24.2 (1.7)*
FEV1 (l)1.28 (0.38)1.42 (0.43)1.18 (0.33)
FEV1 (% pred)43.6 (11.6)50.1 (12.2)39.2 (9.2)*
FVC (% pred)73.5 (16.3)75.7 (9.8)72.1 (19.9)
FEV1/FVC (%)46.0 (8.4)51.4 (8.5)42.5 (6.3)*
IC (l)2.35 (0.44)2.18 (0.21)2.46 (0.53)
TLC (% pred)128.7 (18.7)134.0 (34.1)125.7 (18.7)
FRC174.2 (44.1)177.6 (58.6)172.2 (36.0)
RV (% pred)202.9 (59.6)210.3 (78.8)198.6 (48.7)
FEF25% (% pred)19.1 (10.8)25.2 (14.5)15.1 (4.7)*
FEF50% (% pred)14.8 (7.0)19.0 (9.0)12.1 (3.5)*
FEF75% (% pred)17.6 (5.8)18.5 (7.1)17.0 (5.1)