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Effects of Repetition on Phonation Threshold Pressure Task Performance

Dastolfo, Christina Angela (2011) Effects of Repetition on Phonation Threshold Pressure Task Performance. Master's Thesis, University of Pittsburgh. (Unpublished)

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Effects of Repetition on Phonation Threshold Pressure Task PerformanceChristina A. Dastolfo, M.S.University of Pittsburgh, 2011ABSTRACTPurpose: Phonation threshold pressure (PTP) is a widely used measure to evaluate vocal fold structure and function. Although concerns have been expressed about PTP's vulnerability to shifts as a function of practice, to date no study has addressed this question systematically. The present study addresses that gap at a preliminary, exploratory level.Methods: Nineteen vocally healthy women between 19-27 yrs were recruited into the study. Participants were screened for normal vocal function and self-reported normal learning abilities. Each participant performed a standard PTP task at her 80%ile pitch across 5 practice blocks on two consecutive study days under the same experimental conditions. Results: All participants improved both PTP and PTP standard deviation (SD) values from first to best block in the study, without any specific interventions. Statistical analyses confirmed participants as a group improved in average PTP performance from first to best block within and across experimental days. Individual data showed changes ranged from 0.67 - 5.42 cm H20 (mean = 2.42 cm H20). Improvements in SDs were also significant, ranging from 0.28-2.39 cm H20 improvement shown by individual data. Conclusions: The data suggest caution is warranted in the interpretation of PTP changes subsequent to research and clinical interventions, and provide initial estimates of changes that may occur with task repetition alone. Results from the present study provide motivation for further systematic work on repetition effects on PTP performance.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Dastolfo, Christina
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairVerdolini Abbott, Katherinekav25@pitt.eduKAV25
Committee MemberDickey, Michael Walshmdickey@pitt.eduMDICKEY
Committee MemberShaiman, Susanshaiman@pitt.eduSHAIMAN
Date: 4 May 2011
Date Type: Completion
Defense Date: 13 April 2011
Approval Date: 4 May 2011
Submission Date: 21 April 2011
Access Restriction: 5 year -- Restrict access to University of Pittsburgh for a period of 5 years.
Institution: University of Pittsburgh
Schools and Programs: School of Health and Rehabilitation Sciences > Communication Science and Disorders
Degree: MS - Master of Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: learning; phonation threshold pressure; practice; pressure; voice
Other ID:, etd-04212011-210149
Date Deposited: 10 Nov 2011 19:40
Last Modified: 15 Nov 2016 13:41


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