23:35:48 Wed, 24 Mar 2004sci.med.nutrition
Chad C. at Chad C. said:Hi Martin and friends,
Question. I hear that when losing weight, one will
necessarily lose muscle as well. Is this or isn't it true?
Would Atkins' Induction prevent the burning of muscle
better than a 33/33/33 low-GL*-carb/fat/protein diet?
Thanks! I'm very thankful for your comments.
You do lose muscle as well, more or less regardless of what
you eat (with a slight caveat to follow). The main way of
preventing this is to exercise, especially resistance
exercise to cover each of the main muscle groups. That way,
the body rebuilds the muscles. Also, if you make them
stronger, they will burn more calories anyway.
Cardiovascular exercise is needed to strengthen that system
too. If you don't take steps to prevent it, you will lose
muscle tone and although you will lose weight, you will
probably develop that scrawny-chicken look that so many
dieters wind up with, and which is very hard to shift once
it has set in. Muscles weigh more than fat, though, so you
may find that your actual weight loss is slowed while your
body improves its look - so your waistline could decrease
while you actually gain weight: this is healthy and counts
in your favour. Go more by your measurements than by your
weight; weight is only a rough guide to your health and you
need to consider the muscle-weight factor too. In the long
run, your body's fat supplies should be reducing.
So the particular diet pattern you choose will have no
influence on what happens to your muscles, provided of
course that it contains sufficient nutrients for your needs,
especially protein in the case of muscles. It is how you
exercise that makes a difference.
It wouldn't hurt to have some carbs after exercising, as
this can produce an insulin spike: insulin moves amino acids
into muscles and helps therefore with muscle building. After
exercise, for about an hour and a half, the body continues
burning extra fat and muscle, so having some (not too many)
carbs at this time may help to cancel out some of the muscle
loss and speed the rebuilding, but this is unproven as far
as I know.
--
Martin Thompson [email hidden] (use "martin" not
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