title: Evaluation of peak cough flow in Brazilian healthy adults.
abstract: BACKGROUND
  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.
  
  
  CONCLUSIONS
  The values for Brazilian adult healthy subjects regarding PCF were between 240 and 500 L/min.
authors.affiliation: Universidade Cruzeiro do Sul, Av, Regente Feijó 1295, 03342-000, São Paulo, SP, Brasil. jamilianbar@hotmail.com.
authors.forename: Fernanda Ef
authors.initials: FE
authors.lastname: Cardoso
authors.forename: Luiz Carlos
authors.initials: LC
authors.lastname: de Abreu
authors.forename: Rodrigo Daminello
authors.initials: RD
authors.lastname: Raimundo
authors.forename: Natália Anm
authors.initials: NA
authors.lastname: Faustino
authors.forename: Suellen F
authors.initials: SF
authors.lastname: Araújo
authors.forename: Vitor E
authors.initials: VE
authors.lastname: Valenti
authors.forename: Monica Akemi
authors.initials: MA
authors.lastname: Sato
authors.forename: Silvia Rg
authors.initials: SR
authors.lastname: Martins
authors.forename: Jamili A
authors.initials: JA
authors.lastname: Torquato