The relationship between exercise intensity and infection risk The relationship between exercise intensity and the emission and concentration of aerosol particles in exhaled air has not been well understood up to this point. A Munich research team has shown using a unique experimental setup that ae
The research reveals the threshold of exercise at which aerosol particle emissions increase exponentially.The relationship between exercise intensity and the emission and concentration of aerosol particles in exhaled air has not been well understood up to this point. A Munich research team has shown using a unique experimental setup that aerosol emissions rise exponentially with high levels of physical activity.
Their experimental apparatus initially filtered out the aerosols already present in the ambient air. In the subsequent ergometer stress test, the test subjects inhaled the purified air through a special mask covering the mouth and nose. The exercise intensity was gradually increased from rest to the point of physical exhaustion. The mask was connected to a two-way valve through which only the exhaled air can escape.
The aerosol emissions of well-trained athletes were significantly higher than those of untrained test subjects at maximum effort due to their much higher minute ventilation. The researchers did not find significant differences in particle emissions between genders.
The research team is currently conducting experiments to compare aerosol emissions in strength and endurance training and to correlate them with test subjects’ ages and physical characteristics.
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