Nose or mouth breathing?

@article{Camner1980NoseOM,
  title={Nose or mouth breathing?},
  author={Per Camner and Bjarne Bakke},
  journal={Environmental research},
  year={1980},
  volume={21 2},
  pages={
          394-8
        }
}
Abstract A chamber of Plexiglas was constructed to fit tightly over the nose without much affecting the facial muscles or the freedom of movement of the head. The volume of air entering this chamber was estimated by a thermoanemometer technique. The volume inhaled by six men who had their mouths closed was well reproducible in 5-min periods. During a certain activity when a subject keeps his mouth closed versus when he does not, the difference in the inhaled volume should represent the volume… CONTINUE READING

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