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Degree

Master of Arts, Miami University, Speech Pathology and Audiology, 2009.

Abstract

The purpose of this study was to examine the effects of varying intensity levels on average airflow and estimated subglottal pressure measurements and to examine the repeatability of these measurements over short-term (10 minute) and long-term (one week) time periods. Thirty females between the ages of 18 and 25 years with healthy voices were recruited from the Oxford, Ohio area to participate in this study. Aerodynamic measures of the voice were obtained using the Phonatory Aerodynamic System. The same protocol was followed for all three sessions, with average airflow and estimated subglottal pressure being examined during loud, comfortable, and soft phonatory levels. Results of the study indicated that mean average airflow and mean estimated subglottal pressure measures are consistent over short-term and long-term periods. The study also found that subject perceived changes of intensity variation had a significant effect on estimated subglottal pressure measures, but not on average airflow measures. The results of this study support the repeatability of aerodynamic measures, the reliability of their use, and information that contributes to clinical assessments of voice disorders.

Subject Headings

Speech therapy

Keywords

subglottal pressure; average airflow; effect of intensity variation on aerodynamic measures; repeatability of aerodynamic measures

Committee / Advisors

Susan Baker Brehm, PhD (Advisor)
Barbara Weinrich, PhD (Committee Member)
Wendy LeBorgne, PhD (Committee Member)

Pages

38p.

Document number: miami1239321162
Permalink: http://rave.ohiolink.edu/etdc/view?acc_num=miami1239321162

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