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Table 3 Partitioning of breaths through the mouth and nose

From: Thoracic and respirable particle definitions for human health risk assessment

  Sleeping Sitting Light Heavy
    Exercise Exercise
Adult Male Normal Augmenter a 0, 1.00 d 0, 1.00 0, 1.00 0.52, 0.48
  Mouth-breather a 0.29, 0.71 0.36, 0.64 0.59, 0.41 0.66, 0.34
Gradual Augmenter b 0.12, 0.88 0.13, 0.87 0.29, .071 0.54, 0.46
Adult Female Normal Augmenter a 0, 1.00 0, 1.00 0, 1.00 0.50, 0.50
  Mouth-breather a 0.12, 0.88 0.23, 0.77 0.57, 0.43 0.65, 0.35
Gradual Augmenter b 0, 1.00 0, 1.00 0.22, 0.78 0.59, 0.41
Child Normal Augmenter a 0, 1.00 0, 1.00 0, 1.00 0.51, 0.49
  Mouth-breather a 0.29, 0.71 0.36, 0.64 0.59, 0.41 0.66, 0.34
  Gradual Augmenter c 0.29, 0.71 0.31, 0.69 0.51, 0.49 0.77, 0.23
  1. a From regression equations for oral breathing in Figure 1 of Niinimaa et al. [17]; b Data based on Table 2 and Figure 3 of Bennett et al. [20] for 22 individuals (11 M, 11 F; mean age, 22 yrs); c Data based on Table 2 and Figure 2 of Bennett et al. [19] for 12 children (9 M, 3 F; 6-10 yrs of age); d fraction inhaled through mouth, fraction inhaled through nose.