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Date of Award


Document Type

Thesis - Pacific Access Restricted

Degree Name

Master of Arts (M.A.)



First Advisor

Douglas Matheson

First Committee Member

Martin Gipson

Second Committee Member

Robert Protell


Irritable Bowel Syndrome (IBS) is a disorder characterized by abdominal pain and altered bowel habits (diarrhea and/or constipation) occurring in the absence of abnormalities on both physical and laboratory investigations. This study examined the effects of respiration biofeedback to decrease abdominal pain, anxiety levels, and medication intake in participants with IBS, using a multiple-baseline design across 10 participants. The STAI-Trait Anxiety Inventory, and the Nijmegen Questionnaire for Hyperventilation were administered at baseline and follow-up to determine decreases in anxiety and hyperventilation. It was hypothesized that respiration biofeedback training would produce significant decreases in pain, anxiety, and medication intake during treatment, as well as decreases in the State-Trait and Nijmegen Questionnaire scores at follow-up. Decreases in pain levels were obtained in 70% of the participants, and 30% of the participants showed decreases in anxiety levels. Four of the 5 participants (80%) who recorded medication intake showed decreases in medication. Findings are interpreted and future research is suggested.



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