Relationship between aerodynamic measures of glottal efficiency and stroboscopic findings in asymptomatic singing students

Donna S. Lundy, Soham Roy, Roy R. Casiano, Joseph Evans, Paula A. Sullivan, Jun W. Xue

Research output: Contribution to journalArticle

9 Scopus citations


Singing requires exquisite coordination between the respiratory and phonatory systems to efficiently control glottal airflow. Asymptomatic singing students underwent pulmonary function testing (PFT), videostrobolaryngoscopic examination, and measures of glottal efficiency (maximum phonation time [MPT], glottal flow rate [GFR], and phonation quotient [PQ]) performed in both a sung and spoken tone. Pulmonary function and glottal efficiency values were within reported normative data for professional singers. However, sung tones were made with significantly higher GFR and PQ and lower PQ than spoken tones. The mean GFR was not related to the degree of glottal closure (by videostrobolaryngoscopy) or underlying pulmonary support.

Original languageEnglish (US)
Pages (from-to)178-183
Number of pages6
JournalJournal of Voice
Issue number2
StatePublished - Jan 1 2000



  • Glottal flow rate (GFR)
  • Maximum phonation time (MPT)
  • Phonation quotient (PQ)
  • Pulmonary function testing (PFT)
  • Videostrobolaryngoscopy

ASJC Scopus subject areas

  • Otorhinolaryngology

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