Respiratory and Laryngeal Changes With Vocal Loading in Younger and Older Individuals Purpose The objective of the current study was to investigate the effects of age and vocal loading on the respiratory and laryngeal systems. Method Fourteen younger (M = 20 years) and 13 older (M = 75 years) healthy individuals participated in a 40-min vocal loading challenge in the ... Research Note
Research Note  |   September 18, 2017
Respiratory and Laryngeal Changes With Vocal Loading in Younger and Older Individuals
 
Author Affiliations & Notes
  • Anusha Sundarrajan
    Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, IN
  • Jessica E. Huber
    Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, IN
  • M. Preeti Sivasankar
    Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, IN
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to M. Preeti Sivasankar: msivasan@purdue.edu
  • Editor-in-Chief: Julie Liss
    Editor-in-Chief: Julie Liss×
  • Editor: Jack Jiang
    Editor: Jack Jiang×
Article Information
Special Populations / Older Adults & Aging / Speech, Voice & Prosody / Speech / Research Note
Research Note   |   September 18, 2017
Respiratory and Laryngeal Changes With Vocal Loading in Younger and Older Individuals
Journal of Speech, Language, and Hearing Research, September 2017, Vol. 60, 2551-2556. doi:10.1044/2017_JSLHR-S-17-0106
History: Received March 23, 2017 , Revised May 1, 2017 , Accepted May 2, 2017
 
Journal of Speech, Language, and Hearing Research, September 2017, Vol. 60, 2551-2556. doi:10.1044/2017_JSLHR-S-17-0106
History: Received March 23, 2017; Revised May 1, 2017; Accepted May 2, 2017

Purpose The objective of the current study was to investigate the effects of age and vocal loading on the respiratory and laryngeal systems.

Method Fourteen younger (M = 20 years) and 13 older (M = 75 years) healthy individuals participated in a 40-min vocal loading challenge in the presence of 70-dB background noise. Respiratory kinematic and laryngeal measurements were obtained before and after the challenge.

Results Following the loading challenge, participants in both groups reported greater speaking effort. Sound pressure level increased in the older group and decreased in the younger group after loading. Younger adults, but not older adults, used lower lung volume initiations and higher lung volume terminations after loading. Cepstral peak prominence increased with loading in both groups, but this change was of small magnitude and not clinically significant.

Conclusions The negative effects of loading were observed in respiratory and laryngeal measures, although the pattern of changes differed across the groups. These data increase our knowledge of underlying respiratory and laryngeal physiological changes following a loading challenge and may reflect some of the physiologic mechanisms underlying vocal fatigue.

Acknowledgments
This research was supported by a grant to Huber and Sivasankar from the Office of the Executive Vice President for Research at Purdue University. We acknowledge the contributions of Huber laboratory personnel with data collection and analysis and Nicole Herndon for her completion of the interreliability measurements.
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