Images of the facepieces used in the study.
journal contribution
posted on 2024-03-21, 19:54 authored by Helen Ngo, Johannes Spaeth, Stefan SchumannFrom top to bottom: Surgical mask Dochem, FFP2 respirator 3M, FFP2 respirator Te Yin, FFP2 respirator atemious, FFP3 respirator uvex. Left: View from the front, right: View from the rear. Due to geometrical similarities only one type of facepiece is shown for each manufacturer.
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45 &# 177247 &# 177tolerated moderate increasesadapting tidal volumefacepieces &# 8217div >< pdetermined tidal volumesblood oxygen saturationincreasing inspiration volumerebreathed air increasesincreasing filtering facepieceincreasing protection classffp3 respirators pcorebreathed airoxygen saturationffp3 respiratorsfacepieces increasesprotection classeffective volumewearing facepiecessurgical masksrecumbent ergometerphysical modelphysical activityhealthy adultsconsistently perceived4 mmhg2 mmhg2 ml
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