Re: Nutrition for vegetarian runner


Ignoramus29984 wrote:
> On Thu, 1 Sep 2005 17:11:02 -0400, Jane <jhaacknospam@xxxxxxxxxxxx> wrote:
> > I have been a vegetarian for many years and did a fair bit of research in
> > the beginning. I was fairly careful, balancing proteins and so on. Over
> > the years I've been less careful and although my diet is good in general it
> > may be a little low in protein at this time. I'll keep track for awhile to
> > see if I should supplement.
> >
> > In looking into this I discovered an interesting article on iron depletion
> > on the runners web that probably should be read by all endurance athletes.
> > "Iron deficiency - much more prevalent than you imagined and posing
> > particular risks for athletes"
> >
> > http://www.runnersweb.com/running/rw_news_frameset.html?http://www.runnersweb.com/running/news/rw_news_20050817_PPO_Iron_Deficiency.html
> >
> > An interesting paragraph from the article:
> > "Another study found that women athletes who were not conventionally anaemic
> > but had a mild iron depletion as demonstrated by the serum ferritin test had
> > significantly lower VO2max values than those with no iron depletion.(5) The
> > researchers concluded that this reduction in VO2max was due to lower stored
> > iron rather than reduced blood haemoglobin. They also demonstrated that when
> > these women were given iron supplements, their serum ferritin values and
> > performances improved without any apparent changes in blood haemoglobin."
> >
> >
>
> That makes sense, considering that iron is a key component of red
> blood cells that transport oxygen to muscles and other body cells.
>
> i

Actually, It doesn't make sense to me. Note they said it was due "to
lower stored
iron rather than reduced blood haemoglobin." Since haemoglobin is what
carries
the oxygen and CO2, and that it was not depleted, does this mean the
stored iron
(the serum ferritin?) has something to do with oxygen take up by the
cells?

Can someone explain this more clearly?
Ed

.

Relevant Pages

  • Re: Dietary iron is not dangerous, even heme
    ... They have not been testing the iron levels properly .. ... When cells in culture are exposed to this ester, ... Iron absorption from the whole diet in men: ... In subjects with serum ferritin> 60 micrograms/L there ...
    (sci.med.nutrition)
  • Re: Acid, Base, Water & Temp. Balances?
    ... >>>your immune cells, which then begin to produce damaging chemicals ... it also trigger the lesser absorption of iron or B12. ... > with iron deficiency is anemia; a lack of red blood cells (or RBC's ... > As for fat, it's "warming" effect is due to its insulatory effect. ...
    (sci.med.immunology)
  • Re: Breast cancer - what to eat
    ... Induction of apoptosis by iron depletion in the human breast cancer ... DNA fragments characteristic of apoptosis. ... cells, separation of fragmented DNA from radiolabeled cells, and in ... Iron chelators as therapeutic agents for the treatment of cancer. ...
    (sci.med.diseases.cancer)
  • Re: Acid, Base, Water & Temp. Balances?
    ... the damage caused by oxidant production ... can imbalance in any place of iron effect imbalance in fats ... > with iron deficiency is anemia; a lack of red blood cells (or RBC's ... > As for fat, it's "warming" effect is due to its insulatory effect. ...
    (sci.med.immunology)
  • Re: Acid, Base, Water & Temp. Balances?
    ... the damage caused by oxidant production ... can imbalance in any place of iron effect imbalance in fats ... > with iron deficiency is anemia; a lack of red blood cells (or RBC's ... > As for fat, it's "warming" effect is due to its insulatory effect. ...
    (sci.med.immunology)