Cerebral Hypoxia During Intermittent Hypoxic-Hyperoxic Training (IHHT): A Case Study Using Cerebral Oximetry Based on Time-Domain Near-Infrared Spectroscopy.

Background: In intermittent hypoxia-hyperoxia training (IHHT), air is inhaled through a mask, with the O content of the air varying at intervals. IHHT is used in sports training (e.g.