Re: RC: Reply from an educated derelict

[Tivers@aol.com]

In a message dated 12/27/99 12:52:50 PM Pacific Standard Time, 
dleblanc@mindspring.com writes:

<< You got up about 4AM and ate a good breakfast with little to no meat, and
 then you'd have most of your digestion done by the time the race started
 around 8AM.  During the race, you'd try to eat things that were extremely
 easily digestible.  Someone else just posted that current practice is a
 little different, and they're eating fats.>

Actually, according to the new science, they're moving away from fats. But 
then, as usual, it will be a decade or so before this gets out onto the 
training tracks. 

What you describe as glycogen loading is actually carbohydrate supplementing 
during the event. Glycogen loading is a 4-5 day pre-event buildup of muscle 
glcogen via a feeding protocol that, today, sonsists of fast-acting carbs and 
chromium. 
 
 >Could be also be a function of race length, since a bicyclist will do a 100
 in about 5 hours, and a 25 mile criterion in about an hour.  In a 100,
 you're burning just about all fats after around 30 miles out.  A criterion
 isn't long enough to make fat utilization a real issue.>

You're burning fats as you sit there typing. At the onset of exercise, the 
body switches immediately to glycogen/glucose. How long it maintains this 
substrate preference depends, I think, on the immediate availability of the 
substrate, with glycogen/glucose always preferred. Have already posted a 
couple dozen papers to this effect in this newsgroup.

ti
 
 
 David LeBlanc
 dleblanc@mindspring.com >>


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