A Weightloss and diet forum. WeightLossBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » WeightLossBanter forum » alt.support.diet newsgroups » General Discussion
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

Exercising on a fasted state



 
 
Thread Tools Display Modes
  #1  
Old December 28th, 2009, 09:52 PM
Aaronmac Aaronmac is offline
Banned
 
First recorded activity by WeightlossBanter: Dec 2009
Posts: 1
Default Exercising on a fasted state

Many people start exercising with an empty stomach because it is said that if you do it you will burn fat faster than if you had some food in your stomach. It is actually proven to be right since having an empty stomach is associated with having low sugar levels and in consequence, the fat burning process is faster. The question many people might be asking to themselves is that if it is healthy to go and exercise with no ingestion of food. Well you all should get your own conclusion on whether you want to burn fat faster or the benefits that eating can give you.
It is proven that the fat burning starts after approximately 20 minutes of exercising. So what? Well that means you will be wasting 20 minutes of your energy before you start losing fat and an empty stomach organism cannot give you the energy that a person who ate something would have. That means that the workout of a person who eats would be more effective since it has the energy to exercise for longer.
Eating before exercising will give you many benefits such as working as a recovery booster, will give you the strength to stand more intense workouts and will help people not to feel nauseous and dizzy which happens to people who do not eat and exercise for a long time. Now, it is important to know that it doesn’t mean you will have a complete meal before going to the gym. I would recommend people to eat a banana since it brings a lot of potassium and it helps a lot, a yogurt, oatmeal or a sports drink; those are good options for you to choose from and enjoy your workout with more energy.
  #2  
Old December 29th, 2009, 02:07 AM posted to alt.support.diet
Mxsmanic
external usenet poster
 
Posts: 106
Default Exercising on a fasted state

It's much more complex than what you describe.

Circulating glucose will be used first, but this only lasts for a few minutes.
Food in the stomach does not materially contribute to blood glucose; it must
enter the intestines to be well absorbed. In any case, it's unlikely that
glucose absorbed from a recent meal will precisely match the requirements of
exercise.

If there is a deficit, glycogen stores in the liver and muscles are converted
to glucose. Typically there's about 2000 kcal stored in this way in a person
who is well fed. That can last all day in a sedentary person even while
fasting, and it can last for several hours in a person who is exercising. Fat
won't be burned at any significant rate until the glucose and glycogen are
used up. Even then, it takes a while to ramp up fat metabolism and to
accustom the brain to a change in nutrition, and during the interim expensive
glucogenesis from muscle protein is undertaken (always present to some extent
when fasting with no glycogen stores). And so on.
  #3  
Old December 29th, 2009, 04:35 PM posted to alt.support.diet
Doug Freyburger
external usenet poster
 
Posts: 1,866
Default Exercising on a fasted state

Aaronmac wrote:

Many people start exercising with an empty stomach because it is said
that if you do it you will burn fat faster than if you had some food in
your stomach. It is actually proven to be right since having an empty
stomach is associated with having low sugar levels and in consequence,
the fat burning process is faster. The question many people might be
asking to themselves is that if it is healthy to go and exercise with no
ingestion of food. Well you all should get your own conclusion on
whether you want to burn fat faster or the benefits that eating can give
you.


Folks should definitely draw their own conclusions. Consider that your
discussion fails to discuss how the body changes over to fat burning and
how fat ends up being burned later to restock the carbs burned during
exercise. There's a reason it is said that aerobic exercise increases
the metabolism for several hours - It takes several hours of burning a
higher percentage of fat to rebuild the glycogen burned during the
exercise.

It is proven that the fat burning starts after approximately 20 minutes
of exercising. So what? Well that means you will be wasting 20 minutes
of your energy before you start losing fat


Relying on the incorrect assumption that once the exercise is complete
there is no effect later on the amount of fat burnt. In reality any
exercise is good for burning calories and thus burning fat, but going
longer than 20 minutes is better because after that the percentage of
fat being burnt during the exercise increases in addition to the time
later that fat is burned is longer.

and an empty stomach organism
cannot give you the energy that a person who ate something would have.


Yet another incorrect assumption. This time you have made the error
that all dieters are high carb dieters not actively burning fat already
before they started exercise. Plus you have made the error that carbs
are the only source of energy for any exerciser. Plus you have made the
error that the body has no current stores of glycogen.

In fact digestion draws blood and energy away from the muscles so
exercise interferes with digestions. That's the simplist reason for
exercising on an empty stomach and then eating after you finish - Eating
first and then exercising can trigger indigestion if you exercise
enough.

That means that the workout of a person who eats would be more effective
since it has the energy to exercise for longer.


The Marathon run is designed with a specific length to address this
issue. The human body stores carbs as glycogen and there is a limit to
how much glycogen can be stored. The length of the marathon ensures
that anyone who runs that distance is out of stored glycogen before
reaching the finish. The reason training for a marathon is different in
type than training for a 10K run is running out of glycogen. Training
for a marathon needs to train the body to burn fat fast enough for
running. In comparison training for 10K and shorter runs needs to train
the body to draw down its glycogen stores quickly. I think
half-marathon training can be one or the other depending on personal
conditioning.

For those who are interested in how much exercise it takes to lose how
much fat, a marathon should burn about enough calories to burn a pound
of fat. Food is *very* efficient fuel!

That's why marathoners are given oranges for the sugar during their
runs. It helps them by supplying carbs thus reducing the need to drive
fat out of storage.

Any workout short of a half marathon will not deplete the body's supply
of glycogen for anyone on a high carb diet. When weight lifter bonks
for lack of glycogen the limitation is rarely that they have burned
enough calories to have run a marathon. The limitation is they have run
out of the glycogen stored in their muslces and it takes time to draw
the latic acid out of the muscles and move the glycogen from the liver
to the muscles. A weight lifter who has bonked can generally start
again in a few hours.

Eating before exercising will give you many benefits such as working as
a recovery booster,


If it was long enough before that you completed the digestion. No one I
have ever discussed the topic with means that when they say before.

will give you the strength to stand more intense workouts


Burning fat is about duration of workout far more than about intensity
of workouts. Deliberately aim at the wrong target and you will most
definitely miss the correct target.

Intense workouts do help build muscle, an extremely slow process, and
larger muscle mass does increase basal metabolism. This means intense
workouts are beneficial for keeping weight off and for improving long
term results. But it is the endurance workouts not the intense workouts
that are good for lost fat.

and will help people not to feel nauseous and dizzy which
happens to people who do not eat and exercise for a long time.


That's called bonking or hitting the wall. For folks trying to lose fat
bonking is a sign that you are aiming at the wrong target. Eating to
push away the wall is aiming longer and harder at the wrong target.

It is beneficial to mix intense workouts without your endurance fat
burning workouts. The endurance ones convert mostly carb burning fast
twitch muscle fibers to mostly fat burning slow twitch muscle fibers.
The intense ones grow new carb burning fast twitch muscle fibers.

For muscle growth the expression "no pain, no gain" might or might not
be true. Getting nauseous or dizzy is a sign that you have just done an
intense workout that was harmful not beneficial. The next intense
workout be a tiny bit less intense so you don't get nauseous or dizzy -
The point for optimal muscle growth is intensity without the bonk.
Intensity with the bonk starts to burn muscle protein. The moment you
become nauseous or dizzy is the moment after your workout has gone from
beneficial to detrimental.

Now, it
is important to know that it doesnt mean you will have a complete meal
before going to the gym. I would recommend people to eat a banana since
it brings a lot of potassium


With modern farming methods the amount of potassium in a banana is
unknown. Potassium is good for exercise so if you want a known
controlled amount look at Lite Salt - There are several brands but they
are all near 50% potassium salts. A quarter teaspoon on some food will
work better than a banana.

Also bananas are high carb and high sugar. They are too sweet for most
dieters. They are so sweet they border on candy. If your diet limits
sugar you should be very hesitant to eat a banana without considering
better food choices.

and it helps a lot, a yogurt, oatmeal or a
sports drink; those are good options for you to choose from and enjoy
your workout with more energy.


As low carbers know, fat and protein based foods work better for
endurance exercise anyways. Low carbers tend to do better at endurance
exercise than intense exercise because they are already in the fat
burning mode that marathoners target. Low carbers start out far lower
in stored glycogen - They have the usual amount in their muscles but
tend to be empty of in in their livers. For intense exercise a low
carber will benefit more from several shorter sessions than from one big
session because they start out closer to the wall.
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Low-carb state of mind Andrew B. Chung, MD/PhD[_7_] Low Carbohydrate Diets 33 September 30th, 2007 01:22 PM
How the USA is becoming a police state Useful Info Low Carbohydrate Diets 1 February 4th, 2007 03:58 AM
obesity rates by state Nunya B. General Discussion 0 August 26th, 2005 01:37 AM
State of euphoria! Chad C. Low Carbohydrate Diets 3 May 7th, 2004 06:02 PM
State Fair report frood Weightwatchers 10 October 24th, 2003 10:58 PM


All times are GMT +1. The time now is 08:02 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright ©2004-2018 WeightLossBanter.
The comments are property of their posters.