High 'crit cert

"oyvey1948" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

According to the cyclingnews.com piece on David Extebarria, he says
"Like many other cyclists I have a certificate from the UCI that
recognises that I have a haematocrit much higher than normal, up to
52%."

How many?

I don't know, but here's another question: what evidence is there that
naturally having a high hematocrit provides an individual with a competitve
advantage in endurance sports? That is, while it is crystal-clear that
*elevating* hematocrit (via EPO, blood doping, etc.) increases VO2max and
improves performance, that doesn't necessarily mean that those whose "set
points" run higher than average are any better off.

To use my own self as an example: having a hematocrit of <40% when
fit/training hard didn't prevent me from having a VO2max of >80 mL/min/kg
when I was younger...

Andy ("I'm truly curious"😉 Coggan

"Andy Coggan" <[email hidden]> wrote in message
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Quoted message said:

"oyvey1948" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

According to the cyclingnews.com piece on David Extebarria, he says
"Like many other cyclists I have a certificate from the UCI that
recognises that I have a haematocrit much higher than normal, up to
52%."

How many?

I don't know, but here's another question: what evidence is there that
naturally having a high hematocrit provides an individual with a

competitve

Quoted message said:

advantage in endurance sports? That is, while it is crystal-clear that
*elevating* hematocrit (via EPO, blood doping, etc.) increases VO2max and
improves performance, that doesn't necessarily mean that those whose "set
points" run higher than average are any better off.

To use my own self as an example: having a hematocrit of <40% when
fit/training hard didn't prevent me from having a VO2max of >80 mL/min/kg
when I was younger...

I keep trying to make this point clear but people don't seem to be
listening - the whole point of blood doping is to increase oxygen flow to
the muscles. However, it is the EXCHANGE of gases which are the limiting
factor and not the hematocrit. This implies that there are a multitude of
factors involved in which lowered hematocrit might be offset by total blood
volume or by more efficient exchange of CO2 and O2 through the lungs or
muscle cell walls.

Those with high hematocrits do NOT necessarily have any advantages though it
doesn't hurt to be at the high end of normal.

Andy, you know that the UCI is only concerned about the safety of the riders
🙂
"Andy Coggan" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

"oyvey1948" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

According to the cyclingnews.com piece on David Extebarria, he says
"Like many other cyclists I have a certificate from the UCI that
recognises that I have a haematocrit much higher than normal, up to
52%."

How many?

I don't know, but here's another question: what evidence is there that
naturally having a high hematocrit provides an individual with a

competitve

Quoted message said:

advantage in endurance sports? That is, while it is crystal-clear that
*elevating* hematocrit (via EPO, blood doping, etc.) increases VO2max and
improves performance, that doesn't necessarily mean that those whose "set
points" run higher than average are any better off.

To use my own self as an example: having a hematocrit of <40% when
fit/training hard didn't prevent me from having a VO2max of >80 mL/min/kg
when I was younger...

Andy ("I'm truly curious"😉 Coggan

"Andy Coggan" <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

"oyvey1948" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

According to the cyclingnews.com piece on David Extebarria, he says
"Like many other cyclists I have a certificate from the UCI that
recognises that I have a haematocrit much higher than normal, up to
52%."

How many?

I don't know, but here's another question: what evidence is there that
naturally having a high hematocrit provides an individual with a competitve
advantage in endurance sports? That is, while it is crystal-clear that
*elevating* hematocrit (via EPO, blood doping, etc.) increases VO2max and
improves performance, that doesn't necessarily mean that those whose "set
points" run higher than average are any better off.

To use my own self as an example: having a hematocrit of <40% when
fit/training hard didn't prevent me from having a VO2max of >80 mL/min/kg
when I was younger...

Notionally I see it as being similar to a directional derivative in
multivariable calculus. The maximum increase in a function, i.e. peak
performance, is dependent on several factors (vectors). A significant
decrease in one of the factors has a somewhat diminished effect on the
overall result.
I'm having to post this through google because Earthlink is unable to
connect to the news reader. Anyone else having the same problem?

Phil Holman