Table 1.

Respiratory parameters during normal nasal breathing and during oral breathing post nasal occlusion

	Nasal Breathing	Oral Breathing	P Value
Respiratory rate, breaths/min	332±40	287±37	P < 0.05
Tidal volume, ml	0.16±0.03	0.195±0.04	P < 0.05
Minute ventilation, ml	51.7±7.5	55±11.9	NS
Peak inspiratory flow, ml/s	2.66±0.38	2.61±0.45	NS
Peak expiratory flow, ml/s	2.51±0.40	2..80±0.49	NS
Estimated Raw, cmH2O·ml·s−1	1.8±0.38	2.6±0.26	P < 0.05

All values are mean ± SD, n = 18 each. Nasal occlusion causes slower and deeper breathing in mice. P values of <0.05 after adjusting for multiple comparisons were considered significant.