The Effect of Head Position and/or Stance on the Self-perception of Phonatory Effort

Journal of Voice : Official Journal of the Voice Foundation
Marina Gilman, Michael M Johns

Abstract

Vocal fatigue is a common but poorly defined complaint of patients presenting with voice disorders. Definitions of vocal fatigue generally include increased self-perceived phonatory effort resulting from references to vocal loading or prolonged voice use resulting in deterioration of function. The present study looks at the role of posture, specifically head position and stance, in self-perceived phonatory effort. Forty-six healthy adults, 13 males and 33 females (mean age was 27.5), with no history of vocal problems/disorders within the past year were recruited. Subjects were asked to sustain the vowel /a/ at a comfortable pitch and loudness for 5-10 seconds in each of six positions: sitting and standing in the manner habitual for each subject, two exaggerated positions of the head (head back and head forward), and two exaggerated positions in standing (standing with knees locked and with knees soft). Each position was repeated three times in randomized order, resulting in 18 trials for each subject. After each repetition of the sustained /a/, subjects were asked to rate their experience of vocal effort using a 100-mm visual analog scale (0-40 least effort, 40-60 habitual effort, and 60-100 increased effort). Repeated measures...Continue Reading

References

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Citations

Oct 23, 2019·Behavior Research Methods·Romi ZäskeStefan R Schweinberger
Feb 23, 2020·Journal of Speech, Language, and Hearing Research : JSLHR·Eric J HunterSusanna Whitling

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