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Table 5 Dyspnea and other results for O2 users and O2 non-users among subjects whose SpO2 fell by <4 % during the walk

From: Supplemental oxygen users with pulmonary fibrosis perceive greater dyspnea than oxygen non-users

  O2 (N = 36) No O2 (N = 82) P
6MWD (feet) 944.9 ± 367.0 1385.3 ± 322.4 <0.0001
BMI 31.6 ± 6.8 27.6 ± 5.3 0.001
Borg Dyspnea 3.3 ± 1.6 2.3 ± 1.7 0.005
Borg Exertion* 2.7 ± 2.0 2.2 ± 1.7 0.20
HR baseline 81.3 ± 15.3 79.9 ± 14.7 0.64
HR at 6 min 99.6 ± 11.7 107.6 ± 15.6 0.007
HR rise 18.2 ± 16.1 27.6 ± 10.5 0.002
SpO2 baseline 96.6 ± 2.5 95.2 ± 1.9 0.0009
SpO2 at 6 min 95.2 ± 2.3 93.4 ± 2.1 <0.0001
SpO2 drop 1.1 ± 3.1 1.8 ± 1.0 0.18
  1. Values are mean and standard deviation; 6MWD distance walked during six-minute walk test (6MWT), O2 completed 6MWT using supplemental oxygen, No O2 completed 6MWT without using supplemental oxygen, HR heart rate, SpO2 peripheral oxygen saturation; *N = 30 for O2 users and 67 for non-users