20212106-IMST-NHG_1316-INLINE.jpg (IMAGE) University of Arizona Health Sciences Caption The K2 PowerBREATHE training device contains a valve that offers resistance to the participant's inhalations. An on-board computer records each training breath and tracks the patient’s overall progress. Credit University of Arizona Health Sciences Usage Restrictions Reporters may freely use these materials in news coverage with the appropriate credit information. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.