Table 1 Characteristics and principal variables in cardiopulmonary test

Age (year)

33

40

Sex

Male

Male

Body height (cm) / weight (kg)

173 / 62

175 / 85

Initial COHb (%)

[normal range]

8.2 [0.0–3.0]

14.8 [0.0–3.0]

FEV₁ (L)

[% predicted value]

3.68 [95]

3.54 [93]

FEV₁/FVC

[% predicted value]

88.31 [105]

74.98 [91]

^aHeart rate (bpm)

[% predicted value]

188 [100]

181 [101%]

VO_{2 peak} (mL· kg^− 1 · min^− 1)

[% predicted value]

38.7 [90.63]

37.6 [94.47]

VO_{2 AT} (mL· kg^− 1 · min^− 1)

[%VO_{2 peak}]

22.3 [58]

19.3 [52]

^aO₂ pulse (mL· beat^− 1)

[% predicted value]

14 [100]

18 [94.73]

Breathing reserve (%)

[normal range]

48.4 [> 10]

40 [> 10]

V_E/VCO_{2 nadir}

[normal range]

28 [25.0 ± 2.7]

25 [25.0 ± 2.7]

V_E/VCO₂ slope

[normal range]

24.4 [23.9 ± 3.1]

23.6 [23.9 ± 3.1]

SpO_{2 nadir} (%)

[maximal exercise]

95 [97]

94 [94]

OUES (mL/min/log(L/min))

[% predicted value]

2289 [98.72]

3579 [117.34]

^aRespiratory exchange ratio

1.17

1.13

Exercise time (min’sec”)

10’14”

9’58”

^aSystolic blood pressure/ Diastolic blood pressure (mmHg)

[at stage 3]

161/75 [166/71]

151/69 [140/54]