On Wed, 30 Jan 2002, Amadeus Schmidt wrote:

> On Wed, 30 Jan 2002 09:09:36 -0500, Todd Moody <[log in to unmask]>
> wrote:
>
> >..If Walsh's figures are
> >right, then if one eats about 180g/day of carbs, glycogen
> >reserves will maintain a steady *average*, around which they will
> >fluctuate.  If one eats more than that, they will tend to be full
> >most of the time.
>
> All these computations assume that only the 25% for brain(etc) are fuelled
> with glucose, and 75% live on fat predominately or exclusively.
> How can be?

I don't see any difficulty with the hypothesis.  Muscle tissue
only needs glucose for short bursts of intense exertion.

> I thought the storing/release of glycogen would be quicker and easier as
> the intermediate SFA storage.
> Maybe this view is wrong. And the 1,400 glycogen kcal are reserved for
> brain use and protein preservation (when fasting).

And for emergency exertion.  It makes sense that we have a
reservoir of glucose to keep the nervous system going, and for
emergencies when we need "turbo-charged" effort.

Todd Moody
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