Do you burn more fat

If your going to perform any kind of fasted cardio, make sure you do not exceed 60-70% of your max HR.
 
If you are going to do any type of hard phycial activity in a fasted state (or without carbohydtrates) you are going to invoke a process in the body called gluconeogenesis. This process is responsible for breaking down amino acids to create glucose for energy. Those amino acids are better used for muscle mass, but if the demand for physcial activty is greater, the body will choose energy rather than muscle mass.

I agree with LV...

You may get away with some pounds lost initailly in a fasted state....but some of which will be water and some fat, and some LBM.
 
Personally, I'd eat something light and then wait about 15 minutes. Once that's done I would do an interval cardio program. I am not a big fan of fasted cardio because of the reasons John posted above.
 
The effectiveness of fasted cardio is a popular argument among fitness gurus.

Personally, I agree with what Trainer Lynn said.


standAPART said:
If you are going to do any type of hard phycial activity in a fasted state (or without carbohydtrates) you are going to invoke a process in the body called gluconeogenesis. This process is responsible for breaking down amino acids to create glucose for energy. Those amino acids are better used for muscle mass, but if the demand for physcial activty is greater, the body will choose energy rather than muscle mass.
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I would like to elaborate and add onto what the man above me said...

Carbohydrates are your body's main energy source. You can get carbohydrates through foods such as breads (whole grains and whole wheat), rice, pasta, fruits, and vegetables. It's very important that you get enough of these. If you think eating carbohydrates will only make you pack on the pounds, then you're wrong. Carbs actually give you energy and even help to burn fat!

They're broken down into glucose (blood sugar), which is then metabolized by your body for energy. Excess glucose turns into glycogen and is stored in your muscles as extra energy. But, if your body has more glycogen than it can store, it'll be converted to fat. This is why many dieters swear off carbohydrates, but doing so will leave you feeling tired and sluggish. Also, carbs are metabolic primers, which means that they're needed in order to burn fat - so eat up!

Although protein (which is made up of amino acids) CAN be converted to glucose for energy, you want to make sure this doesn't happen. Why? Where can proteins and amino acids be found? In the muscles. Therefore, in the process of gluconeogenesis, you are basically breaking down muscles (also known as catabolism) since your body uses the muscles for energy...all because you no longer have carbohydrates left to use.
 
Let's make this a bit easier.

For any given amount of time, which seems to you like it would burn more energy?

More calories burned is what you're after.
 
amanda_b said:
i dont think anyone has answered my question! I want to know if you burn more fat RUNNING or WALKING.... thanks :)
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depends on the distance/duration.

if you walk 60 mins at a good pace, on hills, you would burn more calories, fasted or not, than a 20 min light jog on flat pavement.
 
malkore said:
depends on the distance/duration.

if you walk 60 mins at a good pace, on hills, you would burn more calories, fasted or not, than a 20 min light jog on flat pavement.
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But on the flip side you could also burn off more cals sprinting for 10mins than jogging for 20.
 
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