Mitigating the Effects of Acute Vocal Exertion in Individuals With Vocal Fatigue.
Laryngoscope
; 131(12): 2732-2739, 2021 12.
Article
in En
| MEDLINE
| ID: mdl-34009681
ABSTRACT
OBJECTIVES/HYPOTHESIS:
To investigate the effects of acute vocal exertion on individuals with vocal fatigue and to determine whether semi-occluded vocal tract exercises (SOVTEs) are more effective than vocal rest in mitigating acute effects. STUDYDESIGN:
Prospective, repeated-measures design.METHODS:
On consecutive days, 10 individuals (6 males, 4 females) with scores indicating vocal fatigue on the Vocal Fatigue Index completed two 10-minute vocal exertion tasks. Vocal rest or SOVTEs were interspersed in counterbalanced order between exertion tasks. Respiratory kinematic, acoustic, aerodynamic, and self-perceptual measures were collected at baseline, following vocal exertion, following SOVTE/vocal rest, and following the second exertion task.RESULTS:
Acute vocal exertion worsened phonation threshold pressure (P < .001) and vocal effort (P < .001) and reduced maximum fundamental frequency (P < .001). Speech was terminated at lower lung volumes following vocal exertion (decreased lung volume termination [LVT], P < .001). Exertion-induced changes in vocal effort and LVT were significantly reversed by both vocal rest and SOVTE. Detrimental changes in voice measures reoccurred following the second vocal exertion task. SOVTE and vocal rest protected against changes in respiratory kinematics when vocal exertion was resumed.CONCLUSIONS:
Vocal exertion impacted laryngeal, respiratory, and self-perceptual measures in individuals with vocal fatigue. Both SOVTE and vocal rest partially mitigated changes in voice measures and prompted more efficient respiratory strategies that were maintained when vocal exertion resumed. These data increase our understanding of how individuals with vocal fatigue respond to vocal exertion tasks and offer preliminary guidance for optimal clinical recommendations. LEVEL OF EVIDENCE 3 Laryngoscope, 1312732-2739, 2021.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Phonation
/
Vocal Cords
/
Voice Training
/
Voice Disorders
Type of study:
Guideline
/
Observational_studies
Limits:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Laryngoscope
Journal subject:
OTORRINOLARINGOLOGIA
Year:
2021
Document type:
Article
Affiliation country:
United States