M
Mike Clark
Guest
In message <[email protected]>
Dan Gregory <[email protected]> wrote:
> Mike Clark wrote:
>
> > Yes the current UCI rule on the cyclists haematocrit is that it should
> > be no more than 50%. However if you look at a normal population
> > distribution you'll find that about 3% of people living at sea-level
> > naturally have a haematocrit of greater than 50%. If you take people
> > living at altitude the percentage increases. What that means is that the
> > rules also exclude some people from competition even though they haven't
> > used any banned doping procedures.
> >
>
> Not quite true - Charlie Wegelius for example has an exemption (his
> father has high haematocrit too so it can be inherited) and there are
> several others.
That's interesting and I was unaware of that. So what do the UCI take as
evidence of a natural high haematocrit? Do they simply require that one
or other parent has a high haematocrit? If so how often do they test the
parents? What about the possibility that the trait is recessive or
co-dominantly additive?
Mike
--
o/ \\ // |\ ,_ o Mike Clark
<\__,\\ // __o | \ / /\, "A mountain climbing, cycling, skiing,
"> || _`\<,_ |__\ \> | immunology lecturer, antibody engineer and
` || (_)/ (_) | \corn computer user"
Dan Gregory <[email protected]> wrote:
> Mike Clark wrote:
>
> > Yes the current UCI rule on the cyclists haematocrit is that it should
> > be no more than 50%. However if you look at a normal population
> > distribution you'll find that about 3% of people living at sea-level
> > naturally have a haematocrit of greater than 50%. If you take people
> > living at altitude the percentage increases. What that means is that the
> > rules also exclude some people from competition even though they haven't
> > used any banned doping procedures.
> >
>
> Not quite true - Charlie Wegelius for example has an exemption (his
> father has high haematocrit too so it can be inherited) and there are
> several others.
That's interesting and I was unaware of that. So what do the UCI take as
evidence of a natural high haematocrit? Do they simply require that one
or other parent has a high haematocrit? If so how often do they test the
parents? What about the possibility that the trait is recessive or
co-dominantly additive?
Mike
--
o/ \\ // |\ ,_ o Mike Clark
<\__,\\ // __o | \ / /\, "A mountain climbing, cycling, skiing,
"> || _`\<,_ |__\ \> | immunology lecturer, antibody engineer and
` || (_)/ (_) | \corn computer user"