Burn The Fat, Feed The Muscle
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Glycemic
Index - Key To Fat Loss Or Just Another Diet Gimmick?
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Title: The Glycemix Index (GI)
- Key To Fat Loss Or Just Another Diet Gimmick
By line: By Tom Venuto, CSCS, NSCA-CPT
URL: www.burnthefat.com (replace with
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The Glycemix Index
(GI) - Key To Fat Loss Or Just Another Diet Gimmick
By Tom Venuto, NSCA-CPT, CSCS
www.burnthefat.com
The glycemic index (GI) is a scale from 1 to 100
that measures how quickly carbohydrate foods are broken down into
glucose. The original purpose for the glycemic index was to help
diabetics keep their blood sugar under control. The glycemic index has
recently attracted a lot of attention in the bodybuilding, fitness and
weight loss world and has even become the central theme in numerous
best-selling diet books as a method to choose the foods that are best
for losing weight.
According to advocates of the glycemic index
system, foods that are high on the GI scale such as rice cakes,
carrots, potatoes, watermelon or grape juice are "unfavorable" and
should be avoided because high GI foods are absorbed quickly, raise
blood sugar rapidly and are therefore more likely to convert to fat or
cause health problems.
Instead, we are urged to consume carbohydrates
that are low on the GI scale such as black eye peas, barley, old
fashioned oatmeal, peanuts, grapefruit, apples and beans because they
do not raise blood sugar as rapidly.
While the GI does have some useful applications,
such as the use of high GI foods or drinks for post workout nutrition
and the strong emphasis on low GI foods for those with blood sugar
regulation problems, there are flaws in strictly using the glycemic
index as your only criteria to choose carbs on a weight loss program.
For example, the glycemic index is based on eating
carbohydrates by themselves in a fasted state. If you are following
effective principles of fat-burning and muscle building nutrition such
as those outlined in my Burn The Fat, Feed The Muscle (BFFM) e-book (www.burnthefat.com),
you should be eating small, frequent meals to increase your energy,
maintain lean body mass and optimize metabolism for fat loss.
However, since the glycemic index of various foods
was developed based on eating each food in the fasted state, the
glycemic index loses some of its significance.
you should be eating small, frequent meals to increase your energy,
maintain lean body mass and optimize metabolism for fat loss. However,
since the glycemic index of various foods was developed based on eating
each food in the fasted state, the glycemic index loses some of its
significance.
In addition, when you are on a diet program aimed
at improving body composition (losing fat or gaining muscle), you will
usually be combining carbs and protein together with each meal for the
purposes of improving your fat to muscle ratio. When carbs are eaten in
mixed meals that contain protein and some fat, the glycemic index loses
even more of its significance because the protein and fat slows the
absorption of the carbohydrates (as does fiber).
Mashed potatoes have a glycemic index near that of
pure glucose, but combine the potatoes with a chicken breast and
broccoli and the glycemic index of the entire meal is lower than the
potatoes by itself.
Rice cakes have a very high glycemic index, but if
you were to put a couple tablespoons of peanut butter on them, the fat
would slow the absorption of the carbs, thereby lowering the glycemic
index of the combination.
A far more important and relevant criteria for
selecting carbs for weight loss - as well as all your other foods,
proteins and fats included - is whether they are natural or processed.
To say that a healthy person with no metabolic disorders should
completely avoid natural, unprocessed foods like carrots or potatoes
simply because they are high on the glycemic index is ridiculous.
I know many bodybuilders (myself included) who eat
high glycemic index foods such as white potatoes every day right up
until the day of a competition and they reach single digit body fat.
How do they do it if high GI foods “make you fat?”
It’s simple – high GI foods DON’T
necessarily make you fat – choosing natural foods and burning
more calories than you consume are far more important factors. Although
it’s not correct to say that all calories are created equal,
a calorie deficit is the most important factor of all when fat loss is
your goal.
The glycemic index is clearly not a "gimmick" and
should not be completely disregarded, as it is a definitely a
legitimate nutritional tool. Is it a good idea to eat low GI foods in
general? Sure. Is eating high GI foods after your workouts a good idea?
Absolutely. But diet programs which hang their hats on glycemic index
alone as the “miracle solution” are just another
example of how one single aspect of nutrition can be used as a "hook"
in marketing and said to be the "end all be all" of fat loss, when it's
really only one small piece of the puzzle.
Eating Low glycemic index foods alone does NOT
guarantee you will lose fat. You have to take in the bigger picture,
which includes calories/energy balance, meal timing and frequency,
macronutrient composition, choice of processed versus refined foods as
well as how all these nutritional factors interact with your exercise
program.
For more information on carbohydrates and the
glycemic index, and for a balanced, gimmick-free look at all aspects of
fat-burning nutrition, be sure to visit the Burn The Fat, Feed The
Muscle website at: www.burnthefat.com
About the Author:
Tom Venuto is a lifetime natural bodybuilder, an
NSCA-certified personal trainer (CPT), certified strength &
conditioning specialist (CSCS), and author of the #1 best-selling
e-book, "Burn the Fat, Feed The Muscle.”
Tom has written more than 200 articles and has been featured in print
magazines such as IRONMAN, Australian IRONMAN, Natural Bodybuilding,
Muscular Development, Exercise for Men and Men’s Exercise, as
well as on hundreds of websites worldwide. For information on Tom's Fat
Loss program, visit: www.burnthefat.com
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