TIM NOAKES c | Athletes: carb load? Brain tells muscle burn baby burn carbs

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@doctorstotrust3552
presents episode 1132 | Dr Tim Noakes
Levels podcast

Difference between glucose and glycogen?
-we think: whether glucose comes from bloodstream or muscle
the regulation is the same...that is TOTALLY FALSE
During exercise, muscle glycogen depletes in linear manner
according to duration, therefore
the exercise is regulating how much
glycogen is being used
IT IS ALWAYS GOING DOWN
The glucose coming into the blood
from liver is circulating to muscle,
being used by muscle, but regulation
is totally different...

The glucose coming into the blood
from liver is circulating to muscle,
being used by muscle, but regulation
is totally different...because blood glucose oxidation INCREASES
But, don't want that to happen, due to
poor liver more & more depleted of
glucose & glycogen
-more difficult to produce glucose
-muscle says 'I don't care, I need more'
-liver runs low and blood glucose falls

Brain, which needs glucose, won't let liver die..
-as blood glucose drops the power output for athlete drops
begin to get fatigued--many studies have shown:
-if they take in glucose, in few minutes they are back to normal
Shown:
-blood glucose is critical, body burns it
-body could burn fat for everything
-but in these studies it does not
WHY?
-studies where athletes are measured
at rest: 50% of calories are from carbs

This does not make sense...carbs are jet fuel and so,
why is body wasting it while resting?
Dr George Cahill, 1971 paper:
"First rule of metabolism is:
-body regulates blood glucose level
-keeps it within narrow band
If it goes outside of range, body reacts
dramatically to correct it.
-dumps excess into muscle
Brain knows too much in muscle, but
knows you always intake more carbs...
-so it burns the glucose due to your routine!

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