Physiology
Reduced Oxygen Availability
At altitude above 5,000 feet, reduced partial pressure of oxygen decreases aerobic capacity, increases ventilation rate, accelerates dehydration, and impairs recovery. Performance decrements are measurable within hours of arrival.
Acclimatization
Timing Matters
Arrive either less than 12 hours before competition or more than 3 weeks before to allow full acclimatization. The worst window is 24-72 hours post-arrival when acute mountain sickness risk and performance decrements are highest.
Hydration
Increased Fluid Losses
Altitude increases respiratory water loss and urine output. Hydration requirements increase significantly. Monitoring urine color and body weight daily provides practical guidance for individual fluid replacement needs.
Performance Management
Load Reduction and Recovery
Reduce training intensity in the first 48 hours at altitude. Prioritize sleep quality — altitude disrupts sleep architecture. Iron-rich nutrition supports red blood cell adaptation for teams making repeated altitude trips.