Abstract
Introduction: In this study we aimed to evaluate the peak cough flow (PCF) in healthy Brazilian subjects.
Methods:We evaluated 484 healthy subjects between 18 and 40 years old. Subjects were seated and oriented were asked to perform a maximal inspiration followed by a quick, short and explosive expiration on the peak flow meter. Three measures were carried out and recorded the average of the three results for each individual.
Results:The PCF values ranged between 240 and 500 L/min. The PCF values were lower in females than in males. The PCF was inversely proportional to age.
Conclusion:The values for Brazilian adult healthy subjects regarding PCF were between 240 and 500 L/min.
Keywords:Respiration, Cough, Peak expiratory flow rate, Physiology