AirPhysio OPEP low lung capacity deviceThe AirPhysio device for low lung capacity The AirPhysio low lung capacity device is designed for people with low lung capacity to help treat asthma, COPD, bronchiectasis, and or recovery from colds and flu. This version is also suitable for people with low lung capacity due to advanced age, respiratory muscle weakness or severe respiratory diseases. The Low Lung device has two resistance settings: Medium Lung Capacity Bearings Medium resistance for