on pulmonary function and respiratory muscle strength of both healthy smokers and
nonsmokers. Forty-two healthy males (16 in the IMT smokers group [IMT S], 16 in the IMT
nonsmokers group [IMT N], and 10 in the placebo group) participated in the present study.
Using a randomized, double-blind, placebo-controlled design, IMT S and IMT N underwent 4
weeks of 30 breaths twice daily at 50%(+ 5% increase each week) of maximum inspiratory …