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Thorax 56:84 doi:10.1136/thorax.56.1.84e
  • Letters to the editor

Supplemental oxygen in COPD

Table 1

Acute effect of oxygen compared with air and the effect of training with oxygen compared with training with air

Test 1 Test 2 Test 3 Test 2—Test 1
Oxygen (OT)
 SWT (m) 160.0 176.4 196.4 16.4
 Borg 3.83 3.52 2.52 –0.31
Air training (AT)
 SWT (m) 131.0 149.1 192.7 18.1
 Borg 4.53 4.20 4.66 –0.33
Difference (OT—AT)
 SWT (m) 29.0 27.3 3.7 –1.7
 Borg –0.70 –0.68 –2.14 0.02

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