Table 1 Exhaled particles during various breathing maneuvers
Breathing maneuver | Exhaled particle number concentration (n/L) |
|---|---|
in through the nose and out through the mouth | 98 |
whispering “aah” | 672 |
voiced “aah” | 1088 |
whispering counting | 100 |
voiced counting | 130 |
cough | 678 |