Abstract
The route of breathing, oral or nasal, is a determinant of the doses of inhaled pollutants delivered to target sites in the upper and lower respiratory tracts. We measured partitioning of ventilation, using a divided oronasal mask during a submaximal exercise test, in 37 male and female subjects who ranged in age from 7 to 72 y. The following four patterns of breathing were evident during exercise: (1) nasal only (13.5%), nasal shifting to oronasal (40.5%), oronasal only (40.5%), and oral only (5.4%). Children (i.e., 7-16 y of age) displayed more variability than adults with respect to their patterns of ventilation with exercise. Young adults (i.e., 17-30 y of age) who initially breathed nasally with exercise switched to oral ventilation at a lower percentage of the previously measured maximum ventilation (10.8%) than older subjects (31.8%). The partitioning of ventilation between the nasal and oral routes follows complex patterns that cannot be predicted readily by the age, gender, or nasal airway resistance of the subject.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 118-123 |
| Number of pages | 6 |
| Journal | Archives of Environmental Health |
| Volume | 52 |
| Issue number | 2 |
| State | Published - 1997 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Chemistry
- Public Health, Environmental and Occupational Health
Cite this
Oronasal distribution of ventilation at different ages. / James, David S.; Lambert, William; Mermier, Christine M.; Stidley, Christine A.; Chick, Thomas W.; Samet, Jonathan M.
In: Archives of Environmental Health, Vol. 52, No. 2, 1997, p. 118-123.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Oronasal distribution of ventilation at different ages
AU - James, David S.
AU - Lambert, William
AU - Mermier, Christine M.
AU - Stidley, Christine A.
AU - Chick, Thomas W.
AU - Samet, Jonathan M.
PY - 1997
Y1 - 1997
N2 - The route of breathing, oral or nasal, is a determinant of the doses of inhaled pollutants delivered to target sites in the upper and lower respiratory tracts. We measured partitioning of ventilation, using a divided oronasal mask during a submaximal exercise test, in 37 male and female subjects who ranged in age from 7 to 72 y. The following four patterns of breathing were evident during exercise: (1) nasal only (13.5%), nasal shifting to oronasal (40.5%), oronasal only (40.5%), and oral only (5.4%). Children (i.e., 7-16 y of age) displayed more variability than adults with respect to their patterns of ventilation with exercise. Young adults (i.e., 17-30 y of age) who initially breathed nasally with exercise switched to oral ventilation at a lower percentage of the previously measured maximum ventilation (10.8%) than older subjects (31.8%). The partitioning of ventilation between the nasal and oral routes follows complex patterns that cannot be predicted readily by the age, gender, or nasal airway resistance of the subject.
AB - The route of breathing, oral or nasal, is a determinant of the doses of inhaled pollutants delivered to target sites in the upper and lower respiratory tracts. We measured partitioning of ventilation, using a divided oronasal mask during a submaximal exercise test, in 37 male and female subjects who ranged in age from 7 to 72 y. The following four patterns of breathing were evident during exercise: (1) nasal only (13.5%), nasal shifting to oronasal (40.5%), oronasal only (40.5%), and oral only (5.4%). Children (i.e., 7-16 y of age) displayed more variability than adults with respect to their patterns of ventilation with exercise. Young adults (i.e., 17-30 y of age) who initially breathed nasally with exercise switched to oral ventilation at a lower percentage of the previously measured maximum ventilation (10.8%) than older subjects (31.8%). The partitioning of ventilation between the nasal and oral routes follows complex patterns that cannot be predicted readily by the age, gender, or nasal airway resistance of the subject.
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M3 - Article
VL - 52
SP - 118
EP - 123
JO - Archives of Environmental and Occupational Health
JF - Archives of Environmental and Occupational Health
SN - 1933-8244
IS - 2
ER -