Table 1.

Pooled Data for preBC Complex and Non-preBC Inputs to the Inspiratory and Expiratory Phase in Young and Adult Rabbits

	Ti		p	Te		p
	Fnon	FpreBC		Fnon	FpreBC
Adult	2.9 (1.3–4.5)	1.3 (0.2–4.1)	0.57	7.0 (3.3–11.3)	0.9 (−0.8–8.8)	0.04
Young	1.3 (0.9–6.0)	0.4 (−0.3–4.1)	0.12	2.3 (1.3–5.2)	3.2 (0.8–8.4)	0.95
p	0.33	0.52		0.14	0.25

Computations used the equations outlined in appendix 1 and were based on the individual data for 16 adult and 14 young rabbits as obtained in Protocol 2; results are presented as median (25%–75%). Data for inspiratory (Ti) and expiratory duration (Te) were analyzed separately. Kruskal-Wallis analysis of variance on ranks with Dunn’s method for multiple comparisons was used to identify differences between inputs derived from outside the preBC (Fnon) and inputs derived from the preBC (FpreBC) in adult and young rabbits. In adult animals, inputs to Te derived from outside the preBC were significantly larger than inputs from the preBC.

preBC = preBötzinger.