High carb pre-workout nutrition on a low carb diet-

[assassin]

Is it advisable to take pre-workout nutrition which are high in carbs when on a very low carb diet.

My workouts are mainly cardio- interval runs, hill reps, steady state runs, with weight training three times a week.

What worries me is the Low GI rating of the pre-workout nutrition, the resulting insulin spike, the high and eventually the low.

What I am after is something to give me energy and stamina during intense cardio sessions which I perform in the evenings. I find that caffeine does the trick, but I can only take caffeine in the mornings!

Will a product like tri-carb help. My aim is to lose body fat and improve my aerobic fitness- I want to do a triathalon in a year from now.

Thanks

[purplemonkey]

don't eat anything... thats the view of some people from IF community, hormonally they reckon workouts on an empty stomach are best

Quote

What do we already know about fat loss and hormones? Well the fat cells are like “storage” tanks that store fats until the body signals to “release” those fats to be used a fuel/energy (aka burned).
One of the biggest hormones that we have control over with our eating habits is insulin. This is important to know because of the relationship it has with other important hormones involved in helping us to burn fat, namely glucagon and growth hormone. Insulin when released in large quantities is telling the body to “get ready to store some fuel in the tanks”, as it is increased with large meals (or large bursts of sugar into the bloodstream). Glucagon and Growth Hormone are 2 important hormones used in lipolysis (the process of breaking down and releasing stored fats inside the “tanks”).
Here’s the key, when insulin goes up….then glucagon and growth hormone will lower, and when insulin is low then glucagon and growth hormone can elevate. What does this have to do with working out? Well if your goal is to “burn” up stored fat, then you want an environment that allows and promotes fat to be released right? Having high insulin levels during a workout will not be an optimal environment for the hormones most responsible for freeing up fat from storage.
So what is the solution?
Well looking at the video you can see that insulin can remain elevated for 2-3 hours after large enough meals. Ideally you want to go into a fat burning based workout in a more “fasted” state, not “fed” (one in which you want to spike those GH levels with some intensity and burn that fat as fuel for your activity). This can be done first thing in the morning when insulin should be at it’s lowest (and you are fasted from overnight) or if later in the day then you should be waiting 2-3 hours after your last meal. Remember, you don’t need to eat to workout as you should have enough fuel as stored glycogen in your muscles, liver….and oh yeah, you want to burn fat remember?!

heres a link to the video he is talking about >>>>>

[NU_nutrition_TS]

Interesting about the fat versus glucose pre-workout: I posit that the reason why the fat attenuated the GH response to a greater degree was because GH is secreted in order to break down body fat for energy. If you already have fatty acids (from a recently ingested meal) floating about in your blood stream then, obviously, there is no need for the body to secrete as much GH to break the body fat down for fatty acids!

Either way, confirmation of Art DeVany's theory that eating should not tightly bookend intense physical activity if fat loss is one of your goals.