Table 1 Biometric and spirometric characteristics of the studied subjects.

Male/Female

17/11

15/13

-

Age (years)

33.1 ± 8.2

35.1 ± 9.7

ns

Weight (kg)

66.1 ± 11.8

66.1 ± 10.7

ns

Height (cm)

167.4 ± 8.2

166.9 ± 7.9

ns

Pack-years

-

11.2 ± 7.3

-

FEV₁ (L)

3.7 ± 0.7

3.5 ± 0.9

ns

FEV₁ (%)

105.6 ± 11.8

105.1 ± 14.9

ns

FEF_25-75% (L)

4.2 ± 1.3

3.8 ± 1.4

ns

FEF_25-75% (%)

105.7 ± 27.2

100.9 ± 29.7

ns

FEV₁/FVC (%)

85.0 ± 5.4

83.5 ± 6.4

ns

FEF/FVC (%)

95.7 ± 24.9

89.6 ± 29.6

ns