On Top to the Top-Acclimatization Strategy for the "Fastest Known Time" to Mount Everest.

Purpose: To present the acclimatization strategy employed by an elite athlete prior to 2 successful ascents to Mount Everest (including a "fastest known time") in 1 wk.

Methods: Training volume, training content, and altitude exposure were recorded daily. Vertical velocity was recorded by GPS (global positioning system) heart-rate monitor.