Figure 3From: Bronchodilator effect of deep inspiration and bronchoconstriction-triggered coughDeep inspiration (DI) effect on bronchomotor tone before and after inhalation of methacholine at individual concentration causing 20% or more fall in FEV 1 . (MEF40-PEF40)/PEF40 ratio was calculated as an index of DI effect on bronchomotor tone.Back to article page