Relationship between Exhaled Aerosol and Carbon Dioxide Emission Across Respiratory Activities.

ABSTRACT: Respiratory particles produced during vocalized and nonvocalized activities such as breathing, speaking, and singing serve as a major route for respiratory pathogen transmission. This work reports concomitant measurements of exhaled carbon dioxide volume (VCO₂) and minute ventilation (VE), along with exhaled respiratory particles during breathing, exercising, speaking, and singing. Exhaled CO₂ and VE measured across healthy adult participants follow a similar trend to particle number concentration during the nonvocalized exercise activities (breathing at rest, vigorous exercise, and very vigorous exercise). Exhaled CO₂ is strongly correlated with mean particle number (r = 0.81) and mass (r = 0.84) emission rates for the nonvocalized exercise a

SUBMITTER: Moseley B 

PROVIDER: S-EPMC11360368 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature