What Researchers Did
Researchers investigated whether 6 to 7 days of intermittent hypoxic exposure (IHE) improved sleep quality and quantity in sea-level residents subsequently exposed to 4300 meters altitude.
What They Found
While the IHE group's resting arterial oxygen saturation (SaO2) increased from 75% to 81% during the exposure period, both IHE and SHAM groups showed significantly higher sleep SaO2, fewer desaturation events, and increased time asleep at 4300 meters post-treatment. The IHE group, unlike the SHAM group, also experienced significantly lower sleep heart rate but a trend towards more awakenings at altitude.
What This Means for Canadian Patients
For Canadian patients planning travel to high altitudes, this study suggests that short-term intermittent hypoxic exposure may not provide a clear advantage for improving sleep quality. Other strategies for acclimatization or managing sleep disturbances at altitude might be more effective.
Canadian Relevance
This study has no direct Canadian connection.
Study Limitations
The study was limited by its small sample size and the specific, short-term nature of the intermittent hypoxic exposure protocol.