Variables

Observed

Percentage predicted (%)

Mean changes^a

t^b

p-value^b

Before

After

Before

After

VC (L)

3.20 ± 0.57

3.10 ± 0.51

104.5 ± 18.3

103.6 ± 16.0

−0.9

0.32

0.75

FVC (L)

2.75 ± 0.70

2.84 ± 0.56

89.9 ± 21.8

95.0 ± 16.3

5.1

1.11

0.27

FEV1 (L/s)

2.33 ± 0.54

2.46 ± 0.44

86.7 ± 18.8

93.9 ± 14.5

7.1

1.91

0.06

FEF 25% - 75% (L/s)

2.87 ± 0.85

2.71 ± 0.56

87.9 ± 26.9

84.5 ± 17.2

−3.5

−1.61

0.12