Fig. 8.

Average values of minute ventilation during baseline (B₂) and each of the recovery periods during the intermittent hypoxia and sham protocols. A composite average of minute ventilation values recorded during the last 5 min of baseline 2, the last 2 min of each recovery period, and the end-recovery period of each intermittent hypoxia (solid bars) or sham protocol (open bars) completed in the morning and evening on the initial and final days of the study. Note that baseline levels of minute ventilation were greater during the intermittent hypoxia compared with the sham protocol. Also note that the minute ventilation during end recovery was greater during the intermittent hypoxia compared with the sham protocol. *Significantly different from sham protocol.