Summary
Objectives/ Hypothesis
To determine the effect of maximum phonation time goal on efficacy of Vocal Function
Exercises (VFEs) as measured by percent of maximum phonation time goal attained. The
hypothesis was that provision of a maximum phonation time goal would result in greater
increases in percent of maximum phonation time goal attained.
Study Design
Randomized controlled trial.
Methods
A convenience sample of individuals with normal voice were recruited in a university
academic clinic setting. Of 34 participants who volunteered for the study, 28 completed
baseline assessment and 19 completed all study procedures. Participants were randomized
to complete VFEs with knowledge of their maximum phonation time goal (standard goal,
SG), with knowledge of their maximum phonation time goal after three weeks (delayed
goal, DG), or without knowledge of their maximum phonation time goal (no goal, NG).
The primary outcome measure was percent of maximum phonation time goal obtained during
VFE tasks one and four.
Results
Mean change scores for maximum phonation time were 32.50 (SG), 34.55 (DG), and 21.02
(NG). Hedges’ g effect sizes of -0.10 (-1.19, 0.99) and 0.56 (-0.55, 1.67) were obtained
comparing DG and SG groups, and NG and SG groups, respectively.
Conclusions
Absence of maximum phonation time goal attenuates VFE efficacy; maximum phonation
time goal is an active ingredient within VFEs.
Key words
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Article info
Publication history
Published online: April 25, 2023
Accepted:
March 7,
2023
Publication stage
In Press Corrected ProofFootnotes
Supported by the National Center for Advancing Translational Sciences (grant TL1TR001997) provided through the University of Kentucky Center for Clinical and Translational Science.
Identification
Copyright
© 2023 The Voice Foundation. Published by Elsevier Inc. All rights reserved.
