title: Using a mouthpiece.
authors.forename: Elliot
authors.initials: E
authors.lastname: Abt
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D009064:Mouth Protectors; D005082:Physical Exertion / Q000502:physiology*; D011659:Pulmonary Gas Exchange / Q000502:physiology*