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. 2020 Apr;12(4):1296–1304. doi: 10.21037/jtd.2020.02.57

Table 2. Lung function and functional capacity of the participants.

Mean ± SD Range
VC, L 2.58±0.74 1.25–4.22
FVC, L 2.57±0.74 1.24–4.19
VC, predicted % 82.1±15.9 49–117.2
FEV1, L 2.06±0.57 0.98–3.3
FEV1, predicted % 86.6±15.7 42.9–124.1
FEV1/FVC 81.3±6.4 68.3–95.9
DLCO, predicted % 73.8±26.4 21.1–133.3
PaO2, mmHg 83.5±21.6 37.1–173
PaCO2, mmHg 39.0±3.7 32.9–52.9
pH 7.40±0.03 7.39–7.41
Physical activity, steps/day 3,709.6±725.9 285.4–28,510.2
QF torque, Nm/kg 1.57±0.53 0.67–3.59
Grip strength, kg 28.0±8.5 14.5–49.1
SMI, kg/m2 7.32937±1.26356 4.70539–10.4145
Six-minute walk test
   Walk distance, m 429.1±123.9 63.0–679.0
   Minimal SpO2, % 88.7±5.8 72.0–96.0
   Borg scale score 4 [2–5] 0–10
   Four-meter gait speed, m/s 1.05±0.24 0.55–1.71

SD, standard deviation; VC, volume capacity; FVC, forced volume capacity; FEV1, forced expiratory volume in 1 s; DLCO, diffusing capacity for carbon monoxide; PaO2, arterial oxygen pressure; PaCO2, arterial carbon dioxide; QF, quadriceps force; SMI, skeletal muscle mass index; SpO2, percutaneous arterial oxygen saturation.