The present study has as main objective to analyze the effects of respiratory muscle training on pulmonary function of basketball players in the city of Blumenau-SC. Respiratory muscle training (RMT) improves strength and endurance, and consequently improves athlete performance. However, few studies have analyzed the effects of RMT on the pulmonary function of athletes, especially in non-aquatic sports. Participating in the sample were 10 male athletes, between 19 and 26 years old, mean age of 23 years old, of the basketball team of the Association of Parents and Friends of Basketball (APAB). They were evaluated before and after the RMT application through a Clement Clarke brand One Flow portable digital spirometer. RMT was performed two to four times a week for eight weeks, totaling 16 sessions. Based on the results, it can be concluded that the RMT in basketball athletes presented a significant increase in the pulmonary function assessed by the Expiratory Flow Peak (EFP). Because EFP is related to expiratory force, training has proven to be very effective on expiratory muscles. However, it had no effect on the Forced Expiratory Volume in the first second (FEV1) and Forced Vital Capacity (FVC) variables.