My question has to do with fat burning efficiency. Charles Staley said that low intensity cardio makes the body more efficient at burning fat. Which is bad because it will start to burn less of it. Is this then true for Ketogenic diets? If fat is being used as the primary source of fuel won’t your body become more efficient at using fat and then use less of it? Any answers appreciated.
efficient - performing or functioning in the best possible manner with the least waste of time and/or effort
if your body is efficient at burning fat, why would it use less of it?
Think about it if a gas wasting vehicle becomes more fuel efficient then it uses less gas than it did before. Basically what Charles Staley said was that the fat burning machinery becomes smaller when using low intensity cardio because its main source of fuel is fat. My question was would the same apply to a ketogenic diet?
i’ve personally seen a few people on very strict keto diets and they perform very explosivly in the gym and also do interval sprints.
down to 9% bodyfat after the diet was over.
that’s just my $0.02
Oh don’t get me wrong. I have done keto for a long time, and know that you can get results with it. I am not bashing it at all I was just wondering if my question was true in any way. It may not be, but I was just wondering that if keto causes ont to become efficient at burning fat what this actually entails?
[quote]matt_t2004 wrote:
Oh don’t get me wrong. I have done keto for a long time, and know that you can get results with it. I am not bashing it at all I was just wondering if my question was true in any way. It may not be, but I was just wondering that if keto causes ont to become efficient at burning fat what this actually entails?[/quote]
If that was true than the more carbs you ate the more efficient your body would become at handling them.
Recommend you read anything by Lyle McDonald.
In short the answer you are looking for is that ketogenic diets are so effective-- and people can get away with eating more than on high carb (and lose weight) is because of the inefficiency of the ketone. Converting fatty acids to glucose is a VERY expensive process and as a result 3500 calories= pound of fat may equal 25-3000 calories.
Again, read Duchaine or McDonald.
Here we go:
“The Ketogenic state reduces muscle catabolism by reducing the conversion of amino acids to glucose. Ketones are also inefficient: a pound of fat converted into ketones does not equal 3500 calories. In addition, ketones that are not used for energy are excreted in urine and respiration and cannot be converted back into fat” (Duchaine 246)
[quote]Brant_Drake wrote:
matt_t2004 wrote:
Oh don’t get me wrong. I have done keto for a long time, and know that you can get results with it. I am not bashing it at all I was just wondering if my question was true in any way. It may not be, but I was just wondering that if keto causes ont to become efficient at burning fat what this actually entails?
If that was true than the more carbs you ate the more efficient your body would become at handling them.
[/quote]
Your body is very efficient at storing excess carbs as fat and the more carbs you eat the more efficient may get.
Remember your body is programmed to store fat to help you get through times of famine.
[quote]hexx wrote:
Converting fatty acids to glucose is a VERY expensive process and [/quote]
That cannot physically happen, humans lack the ability to turn fat into glucose ever. Carbs are first, proteins (including msucle proteins) are second. Cannot ever be converted into glucose.
I recommend all of you read a nutrition textbook so you have a better understanding of what the authors even talk about.
[quote]GetSwole wrote:
That cannot physically happen, humans lack the ability to turn fat into glucose ever. Carbs are first, proteins (including msucle proteins) are second. (Fat) cannot ever be converted into glucose.[/quote]
Does the body not metabolize fatty acids into ATP, then use those ATP in gluconeogenesis and the creation of ketones?
ElbowStrike
[quote]ElbowStrike wrote:
GetSwole wrote:
That cannot physically happen, humans lack the ability to turn fat into glucose ever. Carbs are first, proteins (including msucle proteins) are second. (Fat) cannot ever be converted into glucose.
Does the body not metabolize fatty acids into ATP, then use those ATP in gluconeogenesis and the creation of ketones?
ElbowStrike[/quote]
Off the top of my head I cannot answer that, but I’ll look it up and get back to you.
I wasn’t trying to be rude, but every nutrition textbook I’ve ever read (including the college one I am currently reading) says fat cannot be converted to glucose my friend.
http://www.faqs.org/nutrition/Met-Obe/Metabolism.html
There’s a good link about metabolism.
Gluconeogensis occurs with proteins, not with fats are far as I know.
And rereading what you said, it really didn’t address what I said.
Glucose and ketones are not the same thing, I simply said fat can not be converted to glucose. Sure, they are both sources of energy, but they are not the same.
Ketones can be used for energy (ketosis) in the absence of glucose, but that doesn’t mean ‘fat was converted to glucose’ which is what I said could not happen.
[quote]GetSwole wrote
Ketones can be used for energy (ketosis) in the absence of glucose, but that doesn’t mean ‘fat was converted to glucose’ which is what I said could not happen.[/quote]
this.