11-24-2008, 08:50 AM
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#20732
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Status: Curls For The Girls
Join Date: Sep 2007
Posts: 8,383
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Quote:
Originally Posted by xjsynx
A question to ponder, the weight gains from cycles mainly come from glycogen loading correct?
Not the primary action for muscle building though?
So, A diet like the AD where it uses only a carb load on weekend, might actually be better than goinig the high carb route?
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From Lyle's book...
Quote:
Myofibrillar hypertrophy refers to an increase in the actual size/protein content of the
muscle fibers, that is an increase in the protein content of the fibers themselves. In a sense, this
is "real" muscle growth, because it represents an increase in the actual muscle fiber size itself.
While myofibrillar hypertrophy is controlled by a complex array of factors (including the
hormones I talked about a few chapters back), it also requires something else to get started: a
high tension stimulus.
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Quote:
Sarcoplasmic hypertrophy refers to an increase in size and amounts of everything else in
your muscles: glycogen, water, minerals, etc. You might think of this as pump growth. Some
coaches also refer to this as energetic growth since it represents an increase in the energy
content of the cell. Sarcoplasmic hypertrophy is also controlled by several factors (for example,
testosterone increases glycogen storage which is why many steroid users report painful pumps
when they train with high reps) but a primary stimulus is depletion of those energy stores
(especially glycogen). This stimulates the cell to refill glycogen (and hence water, since every
gram of glycogen stores 3-4 grams of water) in the muscle to higher levels than normal, which
makes the muscle appear larger. Chronic high-rep training also increases capillary density,
mitochondrial density and other non-contractile elements which contribute to increased visual
size.
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This is the kicker....and probably why the AD will not work AS well as a straight carb diet.
Quote:
As I've mentioned before, this is an energy intensive process. Meaning that if cellular
energy levels are low (because glycogen is depleted or creatine phosphate levels are low), protein
synthesis won't occur very effectively. I should also mention that mRNA doesn't hang around
forever, it starts to be degraded fairly quickly. In fact, recent studies show that the increased
protein synthesis from a single bout of training is gone within 36 hours after that training bout.
So maybe the old dictum of train a muscle every 48 hours wasn't so far out in left field.
It’s currently thought that the speed at which ribosomes can synthesize proteins is the
rate limiting step for protein synthesis. That is, the number and activity of your ribosomes is the
bottleneck for how quickly you can grow. Few and/or slow acting ribosomes and you grow slowly;
lots and/or fast acting ribosomes and you can grow more quickly. For the record, I should make
mention that Duchaine and Zumpano were years ahead of the curve when they realized this back
in 1982, in the original Ultimate Diet. Modern science is validating what they figured out over 20
years ago. I also want to mention that androgens increase ribosome activity which is probably
another way they increase muscle mass above normal.
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There is more in the book about this btw.
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