Training device for improving respiration comprises balloon connected to mouthpiece which is connected to side tube containing valve, chemical indicator above mouth piece shows composition of inhaled or exhaled breath.

摘要

Training device for improving respiration comprises a balloon (5) connected to a mouthpiece (1). A side tube (4) containing a valve (6) is connected to the mouthpiece. This allows the introduction of fresh air and/or partial removal of exhaled air. A chemical indicator (11) above the mouth piece shows the composition of the inhaled or exhaled breath.