Table 3 Spirometry testing indices

VC

[L]

3.12 ± 0.84

[3.05–3.19]

3.18 ± 0.81

[3.04–3.32]

3.10 ± 0.86

[3.01–3.18]

0.363

%VC

[%]

103.2 ± 18.7

[101.6-104.8]

104.6 ± 18.6

[101.3-107.8]

105.6 ± 18.7

[103.8-107.4]

0.573

TV

[L]

0.91 ± 0.37

[0.87–0.94]

0.94 ± 0.45

[0.86–1.02]

0.90 ± 0.34

[0.86–0.93]

0.246

ERV

[L]

0.96 ± 0.48

[0.92-1.00]

0.95 ± 0.44

[0.88–1.03]

0.96 ± 0.49

[0.91–1.01]

0.872

%ERV

[%]

76.5 ± 34.0

[73.6–79.3]

72.6 ± 31.3

[67.2–78.0]

77.7 ± 34.8

[74.3–81.1]

0.142

IRV

[L]

1.25 ± 0.58

[1.20–1.30]

1.28 ± 0.54

[1.19–1.37]

1.24 ± 0.59

[1.18–1.30]

0.511

IC

[L]

2.16 ± 0.64

[2.10–2.21]

2.22 ± 0.63

[2.11–2.33]

2.14 ± 0.64

[2.07–2.20]

0.207

FVC

[L]

3.06 ± 0.85

[2.98–3.13]

3.11 ± 0.83

[2.97–3.25]

3.04 ± 0.85

[2.95–3.12]

0.395

%FVC

[%]

92.4 ± 16.6

[91.0-93.8]

91.4 ± 17.3

[88.5–94.4]

92.7 ± 16.3

[91.1–94.3]

0.451

FEV1.0

[L]

2.26 ± 0.72

[2.20–2.32]

2.17 ± 0.74

[2.05–2.30]

2.28 ± 0.71

[2.21–2.35]

0.130

%FEV1.0

[%]

101.5 ± 23.4

[99.5-103.4]

96.2 ± 28.0

[91.4–101.0]

103.1 ± 21.5

[101.0-105.2]

0.003

FEV1.0/FVC

[%]

73.7 ± 10.4

[72.8–74.6]

69.4 ± 13.1

[67.1–71.6]

75.0 ± 9.0

[74.2–75.9]

0.000

MMF

[L/s]

2.02 ± 1.06

[1.78–2.27]

1.64 ± 0.83

[1.26–2.03]

2.10 ± 1.06

[1.82–2.38]

0.100

%MMF

[%]

68.7 ± 28.5

[62.2–75.2]

58.3 ± 28.1

[45.3–71.3]

70.3 ± 25.1

[63.7–77.0]

0.091

PEF

[L/s]

6.33 ± 2.34

[5.80–6.86]

5.54 ± 2.15

[4.60–6.48]

6.61 ± 2.36

[5.99–7.24]

0.079

%PEF

[%]

83.6 ± 23.1

[78.4–88.8]

72.8 ± 24.8

[61.9–83.7]

87.5 ± 21.4

[81.9–93.2]

0.014

MVV

[L/min]

68.6 ± 25.7

[66.1–71.0]

74.8 ± 30.3

[69-80.6]

81.0 ± 28.3

[77.9–84.0]

0.058

%MVV

[%]

84.7 ± 24.7

[82.4–87.0]

92.2 ± 31.2

[86.2–98.2]

103.2 ± 27.1

[100.3-106.1]

0.001