Table 1

Baseline physiological parameters

Oxygen trained group (OT) (n = 13) Air trained group (AT)
(n = 12)
Age, range (years)64.3 (54–77)71.6 (52–81)
FEV1 (l)0.77 (0.26)0.84 (0.26)
FEV1 (% predicted)28.5 (10.0)35.0 (10.2)
FVC (l)2.30 (0.81)2.14 (0.68)
Pao 2 (kPa)8.50 (1.40)8.48 (1.22)
Paco 2 (kPa)6.47 (0.91)6.14 (1.48)
Baseline Sao 2 (%)92.0 (3.16)93.1 (3.09)
End SWT Sao 2 ( %)80.2 (10.4)85.2 (4.82)
SWT (m)160 (89.1)131 (103)
Post SWT Borg score4.53 (1.12)3.83 (1.27)
CRDQ (Total score)84.4 (21.2)77.9 (24.4)
HAD (Total score)13.5 (7.76)15.2 (9.90)
LCADL (Total score)36.3 (12.6)36.6 (14..4)
  • FVC = forced vital capacity; FEV1 = forced expiratory volume in one second; Pao 2, Paco 2 = arterial oxygen and carbon dioxide tensions; SWT = Shuttle Walk Test; HAD = Hospital Anxiety and Depression Scale (higher score reflects worse symptoms); LCADL = London Chest Activity of Daily Living Scale (higher score reflects greater disability); CRDQ = Chronic Respiratory Disease Questionnaire (higher score reflects better quality of life).

  • There were no significant difference between the groups at baseline.