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From Fellrnr.com, Running tips
→Altitude Training Regime
* Bouts of hypoxia are repeated to give anywhere from 20-90 minutes of total hypoxic time.
* The target [[SpO2|SpO<sub>2</sub>]] is generally between 85 and 75%. Saturations over 90% do not have any significant impact, and going below 75% is not advised.
* Anecdotal reports indicate that [http://en.wikipedia.org/wiki/Hypoxic_Training_Index Hypoxic Training Index] (HTi) doses of 150 do not produce significant results, where HTi of 200-300 are effective.
* IHE can be performed daily or for just a few days per week.
* An IHE program will often build up the duration and [[SpO2|SpO<sub>2</sub>]] over time.
