$Unique_ID{BRK02151}
$Pretitle{}
$Title{The Benefits of Carbohydrate Loading}
$Subject{Benefits Carbohydrate Carbohydrates Loading effect athletic fuel
glucose glycogens muscles bodily tissues glucose fat liver Complex pasta
marathon running}
$Volume{}
$Log{}

Copyright (c) 1993   Tribune Media Services, Inc.


The Benefits of Carbohydrate Loading


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QUESTION:  I'm always reading about marathon runners "loading up" on
carbohydrates, and having big pasta dinners prior to the day of the race.  It
sounds like lots of fun, especially for those who love pasta.  However, what
effect does this ritual actually have on their athletic ability?  Or is it
just part of the game?

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ANSWER:  The goal of marathon runners is to have enough fuel stored in their
systems to last the grueling 26 mile-plus course.  As carbohydrates are
digested, they release glucose, an important energy-producing substance, which
in turn can be absorbed directly by bodily tissues, or stored in the liver or
muscles as glycogens--long chains of glucose molecules.  Stored fat and liver
glycogens are effective at powering long periods of low-intensity exertion,
but fail at sustaining intense exercise for more than a brief amount of time.
Glycogen stored in the muscles is the most readily available and easily
metabolized fuel for the marathon runner.
     Complex carbohydrates (pasta, potatoes, or whole wheat bread) are much
more effective than simple carbohydrates (sugary drinks, candy bars, etc.) in
helping the body produce and store muscle glycogens; their level at the start
of a marathon is directly related to the degree of endurance a runner
possesses.  One study has shown that runners with elevated muscle glycogen
levels were able to maintain their starting pace far longer into an 18.6 mile
race, and cut an average 11 minutes from their running times.  It looks as
though the athletes are using their knowledge of nutrition, as well as their
legs, in getting through the race.

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The material contained here is "FOR INFORMATION ONLY" and should not replace
the counsel and advice of your personal physician.  Promptly consulting your
doctor is the best path to a quick and successful resolution of any medical
problem.