Cigarette smoking may reduce the aerobic capacity, increase resistance to air flow and affect the function of the respiratory muscles. The aim of this study was to compare the effects of Inspiratory Muscle Training (IMT) between two groups: smokers and nonsmokers. Participated 44 college volunteers, divided into two groups: smokers (SG), composed of 20 individuals (25,60±7,01 years) and nonsmokers, constituting the Control Group (CG), composed of 24 volunteers (24,08±7,52 years). Both groups were submitted to TMI, through the use of the aneroid manometer, with duration of 6 weeks, being 3 sessions per week, totaling 18 sessions. The results showed differences statistically significant (p<0.05) post TMI in CG for the variables: Maximal Inspiratory Pressure (MIP), Peak Expiratory Flow (PEF), average arterial pressure in rest (PAM pre-6MWT) and six minute walk test (6MWT). In SG, there was statistically significant difference post TMI for the variables: MIP, PEF, 6MWT and peripheral oxygen saturation after 6MWT (post-immediate SpO2). The comparison of averages of the variables between SG and CG show statistically significant difference post TMI for the variables MIP and PEF. The variable 6MWT not presented statistically significant difference. We conclude that the IMT resulted in a significant increase in inspiratory muscle strength, improve lung function and improve physical performance in subjects studied.
respiratory therapy; breathing exercises; exercise tolerance; smoking
