Respiratory and laryngeal contributions to maximum phonation duration

摘要: Summary Maximum phonation duration (MPD) is a common assessment procedure in speech-language pathology. However, the specific contributions of respiratory and phonatory components speech-production mechanism to this task are not typically assessed. Six women 6 men with normal speech voice were monitored for lung volume during standard MPD task, laryngeal airway resistance (R law ) modified (slow syllable-repetition) task. On average, subjects used 90% their vital capacity (VC) best trial. There was no systematic relation between VC these subjects. R strongly correlated ( r s = 0.886 /a/; 0.829 /i/), but women. increased linearly as decreased (slope > 0.15) subset trials (32%). This pattern four The clinical utility assess breathing questioned because lack association VC, some atypical laryngeal-valving strategies.