Improving Human Cerebrovascular Function Using Acute Intermittent Hypoxia

Participants will wear a non-rebreathing face mask and alternate between breathing 9% O2 gas mixture for up to 1 minute, or until the target SpO2 of 85 percent is reached, and normal room air (21 percent O2) until 2 minutes are complete. This cycle will be repeated 15 times, resulting in a 30-minute protocol.

Participants will wear a non-rebreathing face mask and breathe normal air (21 percent O2) for 30-minutes.