Fig. 5.
Metabolic O2 consumption for neonatal rats raised in 21% O2 (control) or 60% O2 (hyperoxia). O2 consumption is presented in absolute units for rats in normoxia (21% O2; A) and as a percentage decrease from baseline for the same rats in 12% O2 (B). Values are means ± SE. Sample sizes (P4, P7, and P14) are 13, 9, and 9 for control and 11, 12, and 13 for hyperoxia. †P < 0.05 for treatment main effect. For clarity, only statistical comparisons between treatment groups are presented; please see the text for comparisons among age groups.