Preacclimatization in hypoxic chambers for high altitude sojourns

Area of Science:

• Physiology
• Altitude Medicine

Background:

• Hypoxic chambers are increasingly accessible for preacclimatization before high-altitude exposure.
• Current preacclimatization protocols lack standardization, leading to varied outcomes and no consensus.
• This review examines different exposure types and identifies target populations for simulated altitude preacclimatization.

Purpose of the Study:

• To review existing preacclimatization protocols using simulated altitude.
• To identify specific groups that could benefit from preacclimatization.
• To provide recommendations for effective preacclimatization strategies.

Main Methods:

• Literature review of studies on preacclimatization using hypoxic chambers.
• Analysis of different simulated altitude exposure protocols.
• Focus on target group identification for preacclimatization benefits.

Main Results:

• Variability exists in current preacclimatization protocols and their effectiveness.
• No universal standard for simulated altitude preacclimatization has been established.
• Different exposure types and durations yield differing results for acclimatization.

Conclusions:

• Intermittent hypoxia protocols for reducing acute mountain sickness show inconsistent data.
• Performing preacclimatization by sleeping at simulated altitudes is suggested.
• Simulated altitude profiles should follow the "gold standard" for natural high-altitude acclimatization.