Table 3.

Effect of tiotropium on respiratory system mechanics after 6 h of 60% ERB

	ctr	ctr+tiotropium	60% ERB	60% ERB+tiotropium
Rn (cm H2O·s/mL)	0.04±0.00	0.05±0.01	0.04±0.00	0.04±0.01
G (cm H2O/mL)	0.45±0.04	0.48±0.05	0.47±0.02	0.43±0.02
H (cm H2O/mL)	2.03±0.16	2.08±0.24	2.09±0.08	1.85±0.06
Cst (mL/cm H2O)	0.68±0.06	0.71±0.09	0.61±0.02	0.69±0.02
Hysteresis (cm H2O·mL)	2.85±0.15	3.33±0.37	3.47±0.15*	2.73±0.15#

Notes: R_n, Newtonian resistance of the airways; G, tissue viscance (viscous dissipation of energy) and H, tissue elasticity. Data presented as mean ± SEM.

^*P<0.05 to ctr and

^#P<0.05 to 60% ERB. n=6–8 per group.

Abbreviations: Cst, static compliance; ERB, expiratory resistive breathing; ctr, control; SEM, standard error of the mean.