Overview
This study will determine if airway resistance to airflow and pressure, measured by Oscillometry, is associated with abnormal findings on methacholine challenge testing and whether these findings are associated with body habitus,
Eligibility
Inclusion Criteria:
- Willingness to perform breathing test
- Must be able to speak and understand English
- Referred for Methacholine Challenge Test
Exclusion Criteria:
- Unable to provide consent or perform oscillometry test
