Abstract
Objective
To verify safety and compare the immediate effects of voiced high-frequency oscillation
(VHFO) using two types of breathing devices on self-perception and vocal quality according
to performance time in vocally healthy individuals.
Method
Thirty individuals (15 women and 15 men) without vocal complaints or any history of
dysphonia participated. Each participant performed the VHFO technique with the New
Shaker and Shaker Plus devices for 3 (T3), 5 (T5), and 7 minutes (T7). All answered
a questionnaire that investigated the intensity of laryngopharyngeal and vocal symptoms
before and after performing the VHFO with each device and at different times. After
VHFO, at each time, the voice was recorded for further analysis of vocal quality.
The participants also answered a self-assessment questionnaire about vocal, laryngeal,
breathing, and articulatory sensations.
Results
T3 showed a decrease in the laryngopharyngeal symptoms “pain when swallowing,” “secretion
in the throat,” and “phlegm” for both genders and both devices. T7 showed an increase
in “dry throat” for both genders and both devices. There was an increase in the symptom
“fatigue when speaking” in T3 for both genders after VHFO with the New Shaker device.
We also observed a decrease in the symptoms “voice failure” and “dry cough” after
VHFO with the Shaker Plus for men in T3, and “voice failure” after VHFO with the New
Shaker for women in T5. We found a decrease in the acoustic parameter shimmer for
women in T5 and the NHR parameter in T7 for both genders, regardless of the breathing
device. There were no changes in the auditory-perceptual analysis of the voice and
self-assessment of sensations after VHFO with both devices and for both genders.
Conclusion
VHFO performed with New Shaker and Shaker Plus is safe and can be used in clinical
vocal practice in vocally healthy individuals.
Key Words
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Article info
Publication history
Published online: October 01, 2021
Publication stage
In Press Corrected ProofIdentification
Copyright
© 2021 The Voice Foundation. Published by Elsevier Inc. All rights reserved.
