Comment on ‘Limitations in evaluating COVID-19 protective face masks using open circuit spirometry systems: respiratory measurement mask introduces bias in breathing pressure and perceived respiratory effort’

Abstract

Abstract We comment on the paper by Seibt and coworkers (Seibt et al 2023) which investigates whether wearing an additional respiratory measurement mask during open-circuit spirometry assessments (respirometry mask) shows any effect on breathing pressure and perceived respiratory effort when wearing protective face masks commonly worn during the COVID-19 pandemic.