Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Comparing two therapies for treating anxiety disorders

Official title: Respiratory Training in the Treatment of Transdiagnostic Pathological Anxiety: A Randomized Clinical Trial

Run by University of Texas at Austin · NCT05427708 · Data updated 2026-11-12

This study is testing two different therapies for anxiety to see which one helps people feel less anxious and improve their mental health better than just learning about anxiety.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment180 (estimated)
SponsorUniversity of Texas at Austin
Academic / other
Locations1 site (Austin, Texas)
StatusRecruiting
StartedAugust 22, 2022
Main results expectedMay 2027
Study endsMay 2027
Registry record updatedAugust 24, 2025
Trial IDNCT05427708 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults aged 18 and older who experience clinically elevated anxiety and meet DSM-5 criteria for specific anxiety or trauma-related disorders.

Probably not a fit

Patients with significant medical conditions that contraindicate participation in fear-provocation or respiratory challenges may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to compare two distinct interventions for treating pathological anxiety: Interoceptive Exposure (IE), which involves exposure to bodily sensations associated with anxiety, and Capnometry-Guided Respiratory Intervention (CGRI), which focuses on increasing carbon dioxide levels to alleviate anxiety symptoms. A third group will receive psycho-education about anxiety as a control. The study will assess the effectiveness of these interventions in reducing anxiety sensitivity and improving overall mental health. Participants will be randomly assigned to one of the three groups to evaluate the outcomes.

Why it matters

Potential benefit: If successful, this study could provide new, effective treatment options for individuals suffering from various anxiety disorders.

How similar studies have gone: Preliminary studies have shown promise for both Interoceptive Exposure and Capnometry-Guided Respiratory Intervention, indicating potential for success in this trial.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Clinically elevated anxiety as indicated by an eight or higher on the Overall Anxiety Severity and Impairment Scale (OASIS).
2. Meets DSM-5 criteria for one or more of the following anxiety or trauma-related disorders as their "primary" mental disorder:

   * Generalized Anxiety Disorder
   * Panic Disorder
   * Health Anxiety
   * Agoraphobia
   * Social Anxiety Disorder
   * Posttraumatic Stress Disorder
   * Acute Stress Disorder
   * Adjustment Disorder with primary anxious mood
   * Anxiety disorder not otherwise specified
3. No current use of psychotropic medications or stable on current medications for at least 6 weeks
4. Age 18+.
5. Able to arrange transportation to our laboratory for study appointments.
6. Fluent in English.

Exclusion Criteria:

1. No history of medical conditions that would contraindicate participation in fear-provocation or respiratory challenges, including:

   * Cardiovascular or respiratory disorders
   * High blood pressure
   * Epilepsy
   * Strokes
   * Seizures
   * History of fainting
   * Pregnant or lactating
2. Not currently receiving other psychological treatment for anxiety.
3. No history of a suicide attempt within the past 6 months.
4. No history of psychosis within the past 6 months.
5. No history of moderate to severe alcohol or substance use disorder (with the exception of nicotine) within the past 3 months.
6. Does not endorse COVID-19 symptoms during the screening phase.

Where it's running

  • University of Texas at Austin
    Austin, Texas, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.