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Science Forum Index » Medicine - Nutrition Forum » carbohydrate metabolism later in the day
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| conrad |
 Posted: Tue Jun 05, 2007 8:44 pm |
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Guest
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I've read from several sources that carbohydrate
metabolism slows down as the day progresses.
And the sources always site a study having been
done to support such a case. However, I'm curious
as to the factors that governed such a study.
Specifically, were the people sedentary individuals?
I find it hard to believe that your metabolism magically
slows down later in the evening, even if you just finished
an extensive aerobic and strength training workout.
Would carbohydrate metabolism still slow down
even in the face of such a workout? I'm talking
about a 45 minute window that follows such a workout.
Because I've seen studies showing that as being the
time muscle cells are most sensitive to glucose uptake
and where strength training athletes benefitted most
from a 4:1 gram carbohydrate to protein drink during
and post exercise.
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conrad |
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| Susan |
| Posted: Tue Jun 05, 2007 9:17 pm |
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Guest
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x-no-archive: yes
conrad wrote:
Quote: I've read from several sources that carbohydrate
metabolism slows down as the day progresses.
And the sources always site a study having been
done to support such a case. However, I'm curious
as to the factors that governed such a study.
Specifically, were the people sedentary individuals?
I find it hard to believe that your metabolism magically
slows down later in the evening, even if you just finished
an extensive aerobic and strength training workout.
Would carbohydrate metabolism still slow down
even in the face of such a workout? I'm talking
about a 45 minute window that follows such a workout.
Because I've seen studies showing that as being the
time muscle cells are most sensitive to glucose uptake
and where strength training athletes benefitted most
from a 4:1 gram carbohydrate to protein drink during
and post exercise.
If you're talking about the fact that carbs cause less of a glucose rise
later in the day, that's not about metabolism, it's about falling
cortisol levels as the day wears on.
An extensive workout will raise cortisol levels, but not necessarily bg.
Bodybuilders try to blunt the cortisol elevation because cortisol is
catabolic. Insulin inhibits cortisol; having carbs right after a
workout stimulates insulin secretion.
Susan |
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