Publication date: November 2018
Source: Journal of Voice, Volume 32, Issue 6
Author(s): Bruna Rainho Rocha, Mara Behlau
Summary
Objectives/Hypothesis
To verify the influence of sleep quality on the voice.
Study Design
Descriptive and analytical cross-sectional study.
Methods
Data were collected by an online or printed survey divided in three parts: (1) demographic data and vocal health aspects; (2) self-assessment of sleep and vocal quality, and the influence that sleep has on voice; and (3) sleep and voice self-assessment inventories—the Epworth Sleepiness Scale (ESS), the Pittsburgh Sleep Quality Index (PSQI), and the Voice Handicap Index reduced version (VHI-10). A total of 862 people were included (493 women, 369 men), with a mean age of 32 years old (maximum age of 79 and minimum age of 18 years old).
Results
The perception of the influence that sleep has on voice showed a difference (P < 0.050) between measures of sleep quality and vocal self-assessment. There were higher scores on the ESS, PSQI, and VHI-10 protocols if sleep and vocal self-assessment were poor. The results indicate that the greater the effect that sleep has on voice, the greater the perceived voice handicap. The aspects that influence a voice handicap are vocal self-assessment, ESS total score, and self-assessment of the influence that sleep has on voice. The absence of daytime sleepiness is a protective factor (odds ratio [OR] > 1) against perceived voice handicap; the presence of daytime sleepiness is a damaging factor (OR < 1).
Conclusions
Sleep quality influences voice. Perceived poor sleep quality is related to perceived poor vocal quality. Individuals with a voice handicap observe a greater influence of sleep on voice than those without.
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