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Table 2 Baseline impulse oscillometry (IOS), fractional exhaled nitric oxide (FENO) and exhaled carbon monoxide (eCO) measurements in young subjects with mild asthma (MA) and healthy smokers (HS), in experimental (smoking) and control sessions separately

From: Immediate effects of cigar smoking on respiratory mechanics and exhaled biomarkers; differences between young smokers with mild asthma and otherwise healthy young smokers

  MA (N = 22) HS (N = 25)  
Mean (SD) Mean (SD) P*
Z5 [kPa/(L/s)]
 Exrerimental group 0.41 (0.13) 0.30 (0.06) <0.001
 Control group 0.42 (0.13) 0.31 (0.07) 0.001
R5 [kPa/(L/s)]
 Exrerimental group 0.39 (0.12) 0.28 (0.06) <0.001
 Control group 0.40 (0.13) 0.29 (0.07) 0.001
R10 [kPa/(L/s)]
 Exrerimental group 0.36 (0.11) 0.26 (0.05) <0.001
 Control group 0.33 (0.11) 0.27 (0.07) 0.001
R20 [kPa/(L/s)]
 Exrerimental group 0.35 (0.10) 0.26 (0.05) <0.001
 Control group 0.36 (0.10) 0.27 (0.08) 0.002
fdr [kPa/(L/s)]
 Exrerimental group 0.04 (0.06) 0.03 (0.03) 0.407
 Control group 0.04 (0.06) 0.02 (0.04) 0.102
fres (Hz)
 Exrerimental group 11.84 (3.35) 10.48 (2.75) 0.133
 Control group 12.83 (4.73) 10.31 (2.43) 0.024
X5 [kPa/(L/s)]
 Exrerimental group −0.12 (0.05) −0.09 (0.03) 0.014
 Control group −0.13 (0.05) −0.10 (0.03) 0.015
X10 [kPa/(L/s)]
 Exrerimental group −0.02 (0.05) 0.0004 (0.03) 0.070
 Control group −0.02 (0.05) 0.004 (0.03) 0.026
X20 [kPa/(L/s)]
 Exrerimental group 0.08 (0.05) 0.09 (0.05) 0.325
 Control group 0.09 (0.08) 0.10 (0.05) 0.643
 AX (kPa/L)
 Exrerimental group 0.42 (0.48) 0.23 (0.17) 0.072
 Control group 0.47 (0.49) 0.23 (0.15) 0.029
FENO (ppb)
 Exrerimental group 22.50(15.6) 12.00 (6.9) 0.004
 Control group 19.84 (14.6) 10.57 (4.7) 0.004
eCO (ppm)
 Exrerimental group 3.68 (2.01) 4.40 (2.31) 0.265
 Control group 4.14 (2.12) 3.84 (2.27) 0.647
  1. *Student’s t-test
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