Abstract
The study aims to compare the laryngeal aerodynamic parameters of male smokers and non-smokers. It primarily investigates the aerodynamic parameters of voice using AerophoneII, in smokers and non-smokers, compares the results and examines whether the influence of smoking would have any influence on the aerodynamic parameters of voice. We took 60 male subjects of age range 20-45 years who were divided into two groups: smokers and non-smokers. Five parameters were taken to assess: Peakflow, Vitalcapacity, Maximum sustained phonation, Fast adduction abduction Rate and Vocal Efficiency. A significant difference was found for all the aerodynamic parameters between smokers and non-smokers. The pathological changes found in smokers include: (1) airway epithelial damage, (2) chronic airway inflammation; (3) structural changes in the airway wall; and (4) loss of alveolar attachments (Saetta et al. in Eur Respir J 7:1505-1515, 1994).