rekrunner wrote:
Armstrong was accused of much more than blood doping: EPO, blood transfusions, testosterone, cortisone, and HGH.
If you read Renato's lengthy explanations, he explains that the blood volume of the East Africans naturally increase, as a response to training, something he examined in a study with MRIs.
So by comparison, it would be like autologous re-infusing a bag of blood, but occurring naturally as a response to training.
This would serve to greatly marginize, or eliminate the advantage realized by blood doping.
What is so hard to understand?
One person has 5 liters of blood and hematocrit of 40% (40% of the blood volume is red blood cells).
Assume two paths to improvement:
1. The person increases his blood volume to 6liters, but is still at 40% hematocrit. (this will give a large improvement in oxygen carrying capacity)
2. The person keeps hes blood volume constant but goes from 40% to 50% hematocrit. (this will also give a large improvement in oxygen carrying capacity)
Renato claims that through training path 1. can be achieved, this is very reasonable.
What I claim (is normal for a great number of elite runners (also east africans)),
is that after path 1. is achieved you make another trick.
You by artificial means, either blood bag or by erythropoietic drug stimulate to increased number of blood cells. Going to 6liters of blood and 50% hematocrit.
This will give a great advantage, far greater than path 1. alone. Now, if greatly biomechanically talented and very well trained, you are ready for world records.
Renato claims that this path, which we might call path 3.
give no improvement in performance.
I claim this is bullshit, and I can not see Renatos motivation for this highly unscientific claim.
Ps. As a side note some are confused about the benefit of autologous transfusion.
Infusing a blood bag does not increase plasma volume, the extra plasma is quickly excreted through urine.
The net effect is only a increase in hematocrit.
In order to improve plasma volume artificially, you need a plasma expander. Usually some sorth of starch or dextran which increase the osmolarity of the blood. Normal sea salt is also a plasma expander.