Table 2.

Pulmonary Function pre- and post-bronchodilator.

	Ipratropium Bromide (IB)		Albuterol Sulfate (AS)
Parameters	Pre	Post	Pre	Post
FVC (L)	3.14 ± 0.81	3.36 ± 0.77	3.25 ± 0.94	3.32 ± 0.91
FEV1 (L)	2.60 ± 0.55	2.82 ± 0.59***	2.66 ± 0.63	2.80 ± 0.64*
FEF 25–75% (L/s)	2.68 ± 0.74	3.25 ± 1.08***	2.78 ± 0.85	3.27 ± 1.17*
sGaw (cmH20−1sec−1)	0.14 ± 0.03	0.24 ± 0.05***	0.17 ± 0.07	0.25 ± 0.14**
R5 (cmH2O/L/s)	3.94 ± 0.87	2.94 ± 0.62***	3.94 ± 1.00	3.13 ± 0.67***
R20 (cmH2O/L/s)	3.29 ± 0.81	2.51 ± 0.46***	3.06 ± 0.59	2.76 ± 0.45**
R5-R20 (cmH2O/L/s)	0.81 ± 0.50	0.55 ± 0.36**	1.06 ± 0.72	0.45 ± 0.34**
AX (cmH2O/L)	3.93 ± 3.81	2.73 ± 2.81*	4.98 ± 3.87	2.10 ± 2.28**

R5, resistance at 5Hz; R20, resistance at 20Hz.

*P < 0.05; **P < 0.01; ***P < 0.001.