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Exercise and Low Carb Diet's Make Poor Partners
Over the last twenty five
years the most common questioned
asked me by frustrated exercisers,
has been what exercise routine
will get me the body I desire?
My answer is always the same.
They need to start exercising
better judgement and learn
that exercise alone will not
solve their body composition
problem. I believe the number
one reason for starting an
exercise program is weight
reduction, even before fitness
and health concerns. Exercise
by itself is a poor weight
manager and it increases the
need for better nutritional
requirements. I believe I
would receive very little
disagreement that a combination
of nutrition and exercise
is the answer to improvement
in weight loss ( fat loss
), fitness and health risk
concerns. With obesity reaching
epidemic rates and the drop
out rate of most health clubs'
remaining high this article
intent is to lay the foundation
why exercise and low carbohydrate
diet's are poor partners.
Over the last three decades
I have seen extreme changes
in the macro nutrients ( proteins,
carbohydrates and fats ) combinations
in our quests for the ideal
body. Everything from high
carbohydrate, low fat, high
protein, to the current low
carbohydrate craze has bombarded
us, though the failure rates
in managing our weight continue
to rise. The problem lies
in our bodies ability to adapt
to change, especially extreme
change. If your goal is to
lose fat you must provide
your muscle enough quality
fuel without being over fueled.
This is especially true if
your goal to lose fat includes
exercise. The secret is not
found in elimination of macro
nutrients, but in management
of them. Understanding how
to fuel your muscles prior
to exercise sessions and replacing
fuel after workouts is critical
or your body will break down
muscle for fuel.
Understanding how our muscles
use the calories we eat as
fuel for muscle contraction
is the first step in knowing
what to do and not to do.
A basic nutritional knowledge
tells us that proteins repair
and rebuild cells, carbohydrates
energize cells and fats provide
hormonal foundation for cells.
When we lack balance in protein,
carbohydrates and fats are
bodies adjust and can use
all three as a source of fuel
for muscle contraction and
cellular energy. Though energy
is needed for all cellular
function, the focus of this
article is muscle contraction
and body composition. All
muscle contraction derives
energy from adenosine triphosphate
or ATP. The primary source
of ATP comes from glucose,
which is stored in the muscles
and liver as glycogen ( glucose
and water ). Muscle contraction
during anaerobic activity
( resistance training ) can
use glycogen directly to form
ATP. The process is anaerobic
glycolysis, meaning it can
use the glucose as energy
with very little oxygen (
90% glucose, 5% oxygen and
5% fatty acid ). Our muscles
only store enough ATP for
short periods of muscle contraction,
when depleted leads to muscle
failure. The rest period between
weight training sets allows
additional ATP to be produced.
During early stages of aerobic
exercise, ATP is again created
primarily from glucose until
the heart and lungs provide
enough oxygen to the muscles
to allow fatty acids to be
used to create ATP. So there
you have it during resistance
training and the beginning
stages aerobic training the
primary source of fuel is
glucose.
This supports my claim that
low carb diets and exercise
make poor partners. To uncover
why, we need to quickly look
at the concept behind low
carb diets and how they work.
Any diet that provides 100
grams or less of carbohydrate
daily. This article classifies
as low carb diet's. This will
quickly deplete the glycogen
stores in the muscle and liver.
This by itself is testimony
that our muscle's primary
source of fuel is glucose.
Fatty acids stored in the
adipose tissue ( fat cells
) are now released into the
blood and processed by the
liver and some are turned
into glucose ( gluconegenesis
) and some remain fatty acids
and both provide ATP for muscle
contraction. One of the by
products of this process is
ketone bodies which can provide
energy to brain and nervous
system. The problem gluconegenesis
( non glucose turned into
glucose ) provides fuel to
the muscle less efficiently
than glycogenesis ( glucose
). The end result is increased
muscle fatigue, decreased
muscle power, which leads
to poor athletic performance.
A recent study performed at
the University of Connecticut
showed that exercisers who
switched from a balanced diet
( proteins, carbohydrates
and fats ) to a low carb diet
experience the following drop's
in athletic performance. There
was a 7 - 9 percent drop in
muscle power and 6 percent
drop in VO2 max of cardiovascular
performance. Another factor
to consider is the recuperation
of muscle between workouts
is decreased on low carb diets.
So why would someone go on
a low carb diet, especially
when exercising? Because the
initial weight loss that comes
from the glycogen depletion
is believed to be fat loss.
We have become so focused
on weight loss, that any weight
loss is seen as good. As identified
earlier in this article glycogen
is a mixture of glucose and
water and the majority are
stored where? You guessed
it, the muscle. A large percentage
of the initial weight loss
is coming from muscle loss.
I don't think any exerciser's
desire is to have smaller
muscles as a result of their
exercising. The goal of exercise
should be to improve body
composition, the percentage
or ratio of muscle to body
fat. This can only be accomplished
by losing fat without the
loss of muscle tissue. Maintaining
muscle mass is vital to sustainable
weight control. The following
steps will protect your muscles
as your losing fat, while
reaching your ideal weight
and ideal body composition.
FAT LOSS COACH Keys to losing
FAT without losing MUSCLE
1. Cycle fat burning days
with recovery days.
The secret to losing fat without
losing muscle starts with
not being too aggressive or
extreme with your reduction
of carbohydrates. You need
carbohydrate management, not
carbohydrate elimination.
Over the last 12 years, with
more than 10,000 clients I've
found by reducing carbohydrates
by 20% of daily needs and
within 48 hours replenishing
the glycogen in the muscle
by eating 100% of daily carbohydrate
requirements, allows for fat
loss, without muscle loss.
In essence you have two fat
burning days, then a recovery
day. By doing this you'll
have the best of both worlds.
You will experience fat loss
that averages between 1-2
pounds weekly, while muscles
are being well fed. You never
drastically deplete the glycogen
stores in the muscle so athletic
performance is not affected
like on a low carb diet.
2. Exercise on days where
you are receiving more carbohydrates.
Exercising on days where muscle
are getting more carbohydrates
for fuel and taking days off
from exercise when you are
being aggressive about fat
loss. One of the most difficult
thoughts for exercisers to
accept is that most of the
results from exercise come
when we are not exercising.
They come after we exercise
and in direct response to
how the muscles receive nutrition
after exercise.
3. Exercise 1.5 - 2 hours
after eating when blood sugar
levels and insulin levels
are slowly declining.
As insulin levels increase
in response to a rise in blood
sugar after a meal, the cells
are in an anabolic state (
receiving nutrients ). Insulin
is the hormone that feeds
are cells. As blood sugar
levels drop, insulin levels
drop and the pancreas produces
the hormone glucagon and nutrients
stored in the fat cells are
released to the blood and
used for energy. The management
of this blood sugar rise and
drop is important. If blood
sugar levels go to high insulin
feeds the muscle cells and
deposits excess into fat cells.
If insulin levels go too low,
the muscle cells are being
under fed. A slow rise in
blood sugar provides good
nutrition to the muscles and
a slow drop allows glucagon
to take from the fat cells.
Timing your exercise to this
blood sugar decline allows
the muscles to receive from
the fat cells more effectively.
It is important to never exercise
without having at least one
meal left in your day so that
muscles can recuperate from
exercise.
Final Thoughts
Long term success managing
weight starts with the right
approach. If you are overweight,
the real problem is that you
have too much body fat for
how much muscle you possess.
A body composition solution
is needed, not just a weight
loss diet. Your goal should
be to lose fat without losing
muscle or sacrificing your
health in the process. To
maintain your results your
eating habits must develop
life long character. Low carbohydrate
diets provide initial weight
loss, but at the high cost
of losingmuscle and reducing
metabolism. They are inadequate
sources of fuel to support
exercise activity, which is
vital in maintaining good
health. The risks to your
health long term makes low
carbohydrate diet's poor solutions
for life long weight management.
By Charles Remington
Nutritionist
Founder of THE FAT LOSS COACH
Customized Fat Loss System
1303 Highland Ave
Cheshire, Ct. 06410
203-272-0014
charlie@thefatlosscoach.com
http:/www.thefatlosscoach">www.thefatlosscoach">http:/www.thefatlosscoach
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