Here's an interesting web page about blood doping/boosting.
gen.umn.eduexample student projectOpen ↗
s/Sum2000/Blood_doping/dopehow.htm
"Approximately six weeks before competition an athlete withdraws one to four units of his/her blood
(1 unit = 450 ml of blood). The blood is centrifuged and the athlete then immediately reinfuses the
plasma components. The remaining red blood cells are placed in cold storage. The six week time frame
is important since this is how long it takes an individual to restore the lost blood. Between 1 to
7 days before the event, the athlete reinfuses the red blood cells placed in storage. When this
process is performed accurately, an athlete can increase his/her hemoglobin level and red blood cell
count by up to 20%. This provides the body with an increased oxygen level to greater improve
athletic performance and increase the body's potential.
The effects of blood doping are boosted when the athlete trains at a high altitude. At high
altitudes, the athlete's body, which is used to an hypoxic state, will compensate by increasing red
blood cell production. When the athlete moves down to a low altitude, their body is engulfed with
oxygen rich red blood cells, helping their performance. The athlete then further boosts their
body's oxygen level by infusing the stored red blood cells."
The site provides an example (doesn't state if high-alttude training was also utilized) and shows
that Hematocrit increased from 43 to 55, and VO2max increased by 13%.
The site also says...
"...blood doping effects are most prominent in the first two weeks. However, it takes about 16
weeks for the blood levels to return to normal."
So an athlete says they're clean and they pass every drug test. How could any test detect this
method of performance-enhancement?
How many pros live in a place like Colorado, Reno, Spain, France, or Italy where they can train in
the mountains and the flats and then sleep at altitude often enough to boost their hematocrit?
I don't think I'll try this because my hematocrit is already 47.
-WG