High Altitude Training
Episodes covering high altitude training — protocols, research, and expert discussions.
Living or training at high altitude (or simulated altitude) to stimulate red blood cell production, improve oxygen-carrying capacity, and enhance endurance performance
High altitude training is one of the most well-researched performance enhancement strategies in endurance sports. The science is robust: reduced oxygen at altitude triggers EPO release, increasing red blood cell mass and oxygen-carrying capacity.
The key insight:
- "Live High, Train Low" (LHTL) is the gold standard
- Sleep at altitude (real or simulated) for adaptations
- Train at lower altitude to maintain workout intensity
- 2-4 weeks minimum exposure needed
Evidence status:
- Decades of research on elite athletes
- Meta-analyses confirm 1-4% performance improvements
- Individual response varies significantly (responders vs non-responders)
- Used by virtually all elite endurance programs
A proven intervention for serious endurance athletes. The main barriers are access (living near mountains or affording simulation equipment) and the time commitment required. Not worth it for recreational athletes unless you have easy altitude access.
Science & Mechanisms
How Altitude Works:
The Hypoxic Response:
- At altitude, air pressure drops → less oxygen per breath
- Body detects low oxygen via kidneys (HIF pathway)
- Kidneys release erythropoietin (EPO)
- EPO signals bone marrow to produce more red blood cells
- More red blood cells = higher oxygen-carrying capacity
Key Adaptations:
- Hematological: Increased red blood cell mass, hemoglobin, hematocrit
- Ventilatory: Improved breathing efficiency, higher ventilatory response
- Muscular: Enhanced mitochondrial function, capillary density
- Metabolic: Improved fat oxidation, glycogen sparing
Altitude Thresholds:
| Altitude | Effects |
|---|---|
| 0-1,500m | Minimal physiological stress |
| 1,500-2,500m | Moderate hypoxia, EPO response begins |
| 2,500-3,500m | Optimal for LHTL protocols |
| >3,500m | Significant performance impairment, risk of altitude sickness |
Timeline of Adaptations:
- Hours: Increased ventilation, heart rate
- Days 1-3: EPO peaks (2-3x baseline)
- Week 1-2: Red blood cell production increases
- Week 2-4: Measurable hemoglobin mass increase
- Week 3-6: Performance benefits manifest
Research Highlights:
- Levine & Stray-Gundersen (1997): Landmark LHTL study showing 3% improvement in 5K time
- Chapman et al. (1998): Identified responders vs non-responders based on EPO response
- Bonetti & Hopkins (2009): Meta-analysis found 1-4% performance improvement
Episodes
Josh Harlan and Grace Nuttall explore high altitude training methods, comparing training masks, altitude simulation rooms (Hypoxico), and real altitude exposure. Josh shares his...
Coroner Darren Day and deputy coroner Wendy Kipple discuss altitude sickness deaths from a death investigation perspective. Kipple, based in Summit County, Colorado at 10,000 fe...
The Naked Scientists explore the science of high altitude through Cambridge University researcher Andrew Murray and trekker Laura Soule, who climbed to Everest Base Camp at 5,30...
Joe Rogan talks with mountaineer Jeff Evans and TV producer Bud Brutsman about high-altitude mountaineering, including summiting Everest in 2001 with blind climber Erik Weihenma...
Mountain bike champion Hannah Otto joins TrainerRoad CEO Nate Pearson to discuss her racing experience at Marathon Mountain Bike World Championships in West Virginia, as well as...
AMGA guide and two-time Seven Summiter Bill Allen joins hosts Alyssa Clark and Steve to discuss the realities of guiding at high altitude. They cover decades of experience on De...
NASM-certified trainers Wendy Batts and Ken Miller break down the science and practical considerations of altitude training. They explain how hypoxia triggers erythropoietin (EP...