Altitude Training Planner
LHTL / LHTH / IHE — estimate red blood cell response and race timing from evidence-based dose
Inputs
LHTL — Live High Train Low
days
Reference altitudes: Hehuanshan 3275 m, Wuling 3275 m, Xueshan Black Forest 3150 m, Yushan Paiyun 3402 m
Individual response differences
Chapman 2014 shows that under the same altitude protocol, about 30% are high responders (VO2max +6%) and 30% are non-responders (no meaningful change).
Key: monitor EPO and reticulocyte response. If EPO does not rise by about 50% after 5-7 days, you may be a non-responder; consider higher altitude or a shorter block focused on other training.
Estimated Physiological Response
Hb mass gain
+2.9%
VO2max estimate
+1.7%
Dose adequacy
Fair
Best race timing
D+18
Performance Timeline After Return
D+1：Hb mass is high, but blood viscosity is elevated and neuromuscular systems are not readapted
D+3：Dead zone: performance can dip below baseline; avoid key tests
D+7：Neuromuscular recalibration is mostly complete; race-pace work can resume
D+14：First peak window, especially useful for 5K-10K
D+21：Second peak window, useful for half and full marathon
D+28：Hb mass begins to decline; roughly 60% of benefit remains
D+42：Mostly back to pre-altitude status
Your race (D+18): In the best window. D+7-21 after return is a performance peak window
Altitude Training Adjustment Principles
- Intensity pace: oxygen pressure drops about 12% per 1000 m; slow I/T paces by about 11-14 sec/km
- Iron: EPO response needs enough iron; men ≥17 mg/day, women ≥23 mg/day. Test ferritin 2 weeks before departure; supplement first if <30 ng/mL
- Fluids: respiratory water loss increases at altitude; add 1-1.5 L/day
- No hard sessions in the first 3 days: acute HR and blood pressure rise; do easy running or rest only
- Be careful in the first week after descent: viscosity is high and performance can fluctuate for 3-7 days; avoid abrupt race-pace overload
Research Basis
- Levine & Stray-Gundersen (1997, J Appl Physiol): foundational LHTL study: live 2500 m / train 1250 m for 4 weeks, 5K improved 1.1%
- Wilber et al. (2007, MSSE): daily exposure ≥22 hours at 2000-2500 m as an optimal dose; <12 hours/day has limited effect
- Chapman (2013, Br J Sports Med): individual response variability: some athletes respond strongly to a given protocol while others show little to no response
- Saunders et al. (2009, High Alt Med Biol): ≥3 weeks is a threshold; under 2 weeks produces little hematological change
- Bonetti & Hopkins (2009, Sports Med meta-analysis): LHTL performance gain around 1.4% in elite athletes and 4.0% in recreational athletes
Next: integrate altitude into the full plan