Maximum duration of phonation: objective tool for assessment of voice.
30 male and 30 female adults sustained the vowel /a/ under specified conditions. Analysis of the data for 10 trials suggests that four trials produced at a comfortable pitch and loudness level and interrupted by a 60-sec. rest would reliably evaluate prolonged vocalization. Males' superior performance was noted. Clinical applications and research implications are discussed.
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D010700:Phonetics; D012737:Sex Factors; D013060:Speech; D013997:Time Factors; D014831:Voice