Altitude training isn’t one single method - it’s a toolbox. And like any good toolbox, the magic isn’t just in the tools themselves, but in when and how you use them.

Different altitude models create different physiological signals. Some are short and punchy, others are slow and cumulative. Some fit beautifully into race season, others belong in base building or even recovery.

Let’s break down the main altitude training models, what they’re best at, and how they can (and often should) be combined.

Live Low Train High (LLTH)

Also known as Intermittent Hypoxic Training (IHT) or Repeated Sprint Training in Hypoxia (RSH) depending on the type of training

What it looks like

You live at sea level and do selected training sessions in hypoxia, typically simulating 2500-4500 m, for 2-5 weeks, 2-4 sessions per week.

This is the most time-efficient and accessible altitude model - no relocation, no sleeping in thin air, no mountain logistics.

What it’s best for

• Improved muscular efficiency
• Better oxygen utilization at the muscle level
• Enhanced lactate buffering
• Increased anaerobic power and sprint capacity

This model is especially popular for athletes who want altitude benefits without committing their entire life to it.

Key considerations

• Training intensity or volume may need adjustment
• Works well in pre-competition phases
• Races are best scheduled 3-7 days after the altitude block

Pro tip

LLTH pairs well with a Live High model if you want to layer adaptations without frying your nervous system.

Live High Train Low (LHTL)

What it looks like

You live and/or sleep at moderate altitude (2000-3000 m), while doing key training sessions at low altitude or sea level.

For mountaineers, this often includes a gradual progression toward the target altitude.

To be effective, this model requires consistent exposure:

• 12+ hours per day
• 2-5 weeks
• 400-500+ total hours of hypoxia

Yes - this one requires commitment.

What it’s best for

• Increased erythropoietin (EPO) production
• Higher red blood cell count and hemoglobin
• Improved VO₂ max and aerobic efficiency
• Pre-acclimatization for mountaineers

All while preserving high-quality training intensity.

Key considerations

• Best used during base or build phases
• Races typically scheduled 7-14 days post-altitude
• Travel to real altitude usually 0-2 days after finishing the block

Variation: HHL (Live High - Train High/Low)

Here, living and low-intensity training occur at altitude, while only high-intensity sessions happen at low altitude or sea level. Think of it as strategic compromise rather than suffering for sport.

Live High Train High (LHTH)

What it looks like

You live and train at altitude 24/7 for several weeks. No escape. No sea-level intervals. The mountain is now your roommate.

What it’s best for

• Full altitude acclimatization
• Increased red blood cells, hemoglobin, and VO₂ max
• Deep aerobic base development
• High-altitude resilience

This model shines for:

• High-mountain expeditions
• Competitions held at altitude
• Long-term preparation rather than quick performance gains

Key considerations

• Training intensity often drops
• Higher risk of fatigue, sleep disruption, and overreaching
• Requires careful load management and longer recovery
• Not realistic in simulated-altitude setups

This is the most demanding model - and not one to use casually.

Intermittent Hypoxic Exposure (IHE)

What it looks like

Passive exposure to low-oxygen air at rest, alternating with normal air.
No exercise involved. Yes - you can be lying down while adapting. Science is generous sometimes.

What it’s best for

• Supporting recovery phases
• Improving oxygen efficiency
• Metabolic health
• Gentle acclimatization to altitude

Ideal for:

• Taper periods
• Wellness users
• Athletes returning from injury
• People with limited physical capacity or chronic conditions

Key considerations

• Less impact on aerobic performance than active models
• Works best as a complement, not a standalone performance strategy
• Easy to integrate into daily routines or recovery protocols

Think of IHE as the background music of altitude training - subtle, supportive, and surprisingly effective over time.

One Final (Very Important) Thing: These Models Can Be Combined

Altitude training is not an “either-or” decision.

In practice:

• LHTL may dominate base building
• LLTH often shines closer to race season
• IHE fits beautifully into recovery or taper phases
• LHTH serves long-term altitude goals

Smart athletes (and coaches) layer and sequence these models based on:

• Training phase
• Competition calendar
• Individual response
• Recovery capacity

Altitude training works best when it’s planned, not improvised.

The Bottom Line

Altitude training isn’t about choosing the hardest model - it’s about choosing the right stimulus at the right time.

Used strategically, these models can:

• Enhance performance
• Improve resilience
• Support recovery
• Prepare you for both sea-level races and high-altitude challenges

The mountain doesn’t care about your schedule - but smart altitude planning does.

And that’s where the real gains live.