Table 2.

Baseline measurements of lung function at challenge test 1 and challenge test 2.

	1st set	1st set CV	2nd set	2st set CV	SDw	CV (%)	ICC
Rrs5 (kPa/L/sec)	1.11 ± 0.24	8.04 ± 11.9	1.10 ± 0.18	7.68 ± 4.0	0.37	4.64	0.88 (0.76–0.94)
Rrs10 (kPa/L/sec)	0.90 ± 0.17	5.33 ± 2.70	0.90 ± 0.13	5.88 ± 4.05	0.31	4.29	0.87 (0.74–0.94)
Xrs5 (kPa/L/sec)	−0.43 ± 0.12	10.4 ± 5.74	−0.41 ± 0.10	14.0 ± 7.74	0.29	5.78	0.81 (0.61–0.91)
Xrs10 (kPa/L/sec)	−0.23 ± 0.06	11.7 ± 6.01	−0.25 ± 0.09	14.4 ± 8.44	0.31	10.35	0.73 (0.46–0.87)
AX (kPa/L)	3.62 ± 1.36	11.2 ± 6.70	3.28 ± 1.28	14.4 ± 10.08	0.98	11.21	0.85 (0.71–0.93)
Rf (Hz)	22.0 ± 2.0	4.90 ± 2.81	21.6 ± 2.2	4.64 ± 4.47	1.37	3.36	0.76 (0.52–0.88)

CV, coefficient of variation; SDw, within-subject SD (SD of the mean difference between the 1st and 2nd sets divided by √2); CV (%), CV between the first and second sets; ICC, intraclass correlation coefficient (between-subject variance divided by the total variance).