I'm really starting to believe in the effectiveness of a vlc/ketogenic diet on fat loss and improved performance. I just got "The Art and Science of Low Carbohydrate Living" & "Performance" by Volek and Phinney, and I'm super excited. But I was wondering how, if athletes have lots of triglycerides (TG) stored in their muscles so that it can be oxidized quickly, and if these TG's come primarily from dietary fat, is fat from adipose tissue ever used? Or would you have to exercise for so long that you run out of whatever is readily available and therefore have to tap into your stores of adipose? I can probably find this in one of those books, but I'm not there yet and I'm getting antsy. Thanks in advance.
It is very simple: if what you eat provides enough calories for your daily basal needs of energy, as well as the extra energy you need for running or whatever exercise you're doing, then no, unfortunately you will not magically lose weight. I.e. you have to eat less calories, in order for stored fat to be utilized.
alligator (I don't seem able to comment on an answer..), you've mixed a few things: ketones are typically made from fat, and sometimes possibly from ketogenic amino acids if you're eating a lot of protein. So when you burn ketones, you burn fat. Whether it's dietary or stored as I already said, depends on the amount of dietary.
I think sufficient protein for satiety, enough fat to absorb nutrients and produce hormone and enough fiber to stay regular.
Then add carbs as needed to energy.
If you are a jogger/walker you absolutely do not need fruit or starchy carbs and would have no issues on a 50g of carb diet. Try doing that as a sprinter and you are screwed. Try doing that as a weightlifter and...50/50. I'd guess the average person casually lifting would be fine on 50gm a day + an extra 50-60gm pwo.
"Earn your carbs" is probably the best rule of thumb. Eat what you need, not as much as you want.
It is much easier to burn adiposity on carb controlled diet, rather than on a VLC/ketogenic diet. Why? Because when you eat just enough carbs to fuel exercise and daily mental function, when you are low on them, your body will turn to fat for energy.
However, if you are eating ketogenically, you are in starvation mode, and instead of burning adipose tissue when low on carbs, it will instead burn ketones (because this is much less efficient means of burning fat...so you survive longer).
Think about it- the leanest people on the planet (fitness models) overwhelmingly eat moderate carb diets with oatmeal/brown rice/sweet potatoes as daily occurances.
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