Until now there has been no clarity on how exercise intensity affects the emission and concentration of aerosol particles in exhaled air. With a new experimental setup, a Munich research team has shown that aerosol emissions increase exponentially with intense physical exertion - so that indoor sporting activities result in a higher risk of infectious diseases such as COVID.
Before the study it was known that the respiratory volume for untrained people increases from around 5-15 liters per minute at rest to over 100 l/min when exercising. Highly trained athletes actually reach levels of 200 l/min. ...
