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The purpose of this study was to compare pulmonary function and chest mobility between opera singers and healthy subjects. Breathing, as the initial unconscious step in maintaining life, is of paramount importance since it directly impacts body movement. Methods such as measuring lung capacity and assessing thoracic cage mobility are used to evaluate the quality of breathing. For this study, a total of 24 participants were enlisted, comprising 12 opera singers and 12 individuals in good health. Pulmonary function was assessed through spirometry, while chest mobility was gauged using a tape measure. The results revealed no significant differences in forced vital capacity, forced expiratory volume in one second, peak expiratory flow, and maximum expiratory pressure between opera singers and healthy subjects. However, a notable distinction was observed in maximum inspiratory pressure and chest mobility between these two groups. These findings suggest that opera singing training and performance may positively influence chest mobility and the strength of inspiratory muscles, although the impact on pulmonary function appears to be limited.