Table 5

Respiratory system resistance before and after salbutamol aerosol

Device used		Respiratory system resistance (cm H₂O/ml/s): mean (SEM)
Device used		Before	15 min	30 min	60 min	120 min	p^5-150
Study 1:
1 (MDI)	0.339 (0.065)	0.229 (0.044)	0.175 (0.032)	0.225 (0.042)	0.278 (0.054)	<0.0001^5-151
2 (Jet)	0.349 (0.070)	0.262 (0.046)	0.226 (0.042)	0.284 (0.051)	0.331 (0.063)	<0.0001^5-164
3 (Ultrasonic)	0.369 (0.072)	0.202 (0.034)	0.146 (0.022)	0.219 (0.043)	0.298 (0.059)	<0.0001^5-160
Study 2:
1 (MDI)	0.404 (0.052)	0.325 (0.041)	0.287 (0.037)	0.336 (0.041)	0.374 (0.048)	<0.0001^5-151
2 (Jet)	0.411 (0.057)	0.373 (0.052)	0.345 (0.050)	0.371 (0.051)	0.412 (0.054)	<0.0001^5-151
3 (Ultrasonic)	0.428 (0.062)	0.325 (0.047)	0.246 (0.035)	0.299 (0.040)	0.365 (0.047)	<0.0001^5-151

↵5-150 One way repeated measures ANOVA.
Multiple pairwise comparison by Student-Newman-Keul Method (p<0.05):
↵5-151 30 min<15 min<60 min<120 min and before treatment;
↵5-164 30 min<60 min<120 min and before treatment, 15 min<120 min<before treatment;
↵5-160 30 min<15 and 60 min<120 min<before treatment.