Respiratory and Laryngeal Function in Teachers: Pre- and Postvocal Loading Challenge

J Voice. 2019 May;33(3):302-309. doi: 10.1016/j.jvoice.2017.11.015. Epub 2017 Dec 27.


Purpose: The purpose of this study was to examine laryngeal and respiratory physiological changes in teachers before and after a 1-hour vocal loading challenge.

Methods: Twelve teachers completed ratings of vocal tiredness, vocal effort, and produced a reading passage and monologue before and after a 1-hour vocal loading challenge (reading aloud in noise). Sound pressure level, lung volume parameters, cepstral peak prominence, and low/high spectral ratio were measured.

Results: After loading, participants significantly increased vocal effort, vocal tiredness, utterance length, and sound pressure level, and significantly decreased % vital capacity/syllable.

Conclusions: Following the 1-hour reading-aloud challenge, tiredness and effort increased. However, lung volume did not change and cepstral peak prominence and low/high spectral ratio remained in the normal range. Future studies are needed to understand the effect of vocal use and vocal loading in teachers.

Keywords: Respiration; Teachers; Vocal fatigue; Vocal loading; Voice.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Female
  • Humans
  • Larynx / physiopathology*
  • Lung / physiopathology*
  • Lung Volume Measurements
  • Male
  • Middle Aged
  • Occupational Diseases / diagnosis
  • Occupational Diseases / etiology
  • Occupational Diseases / physiopathology*
  • Occupational Health*
  • Predictive Value of Tests
  • Risk Factors
  • School Teachers*
  • Speech Acoustics*
  • Speech Production Measurement
  • Time Factors
  • Voice Disorders / diagnosis
  • Voice Disorders / etiology
  • Voice Disorders / physiopathology*
  • Voice Quality*
  • Young Adult