[quote]Christian Thibaudeau wrote:
[quote]Mutsanah wrote:
[quote]Christian Thibaudeau wrote:
[quote]humseper wrote:
Hi CT
Can you please tell me why FINiBAR is the ideal carb choice before training and what kind of carbs?
As far I can tell from the label, its carb sources is from rice oligodextrin, palatinose and otas. Those are all slow acting carbs with low GI, right?
I thought an ideal carb choice before training would be a hi GI carb like dextrose, to create an insulin spike?[/quote]
The GI is, at best, an indirect measure of the insulin response. Plenty of foods have a relatively low glycemic index but cause an important insulin spike (measured by the insulin index). For exemple some yogurt has been tested at a GI of 62 but an II of 115, which is a higher insulin index than bread and rice.
On the other hand, brown rice was measured to have a GI of 104 but an II of 62.
The insulin index measures the actual insulin response, whereas the glycemic index only measures the speed at which the food increases blood glucose level.
Rice oligodextrin and palatinose has a low GI, meaning that they increase blood glucose slowly. But they actually have a high II.
So in other words, they spike insulin but release carbs in the blood stream over a relatively long period of time. This is actually what makes them the ideal carbs: you get the anabolic insulin spike, but a constant level of blood glucose during the workout which favors stable energy levels and prevents crashes.[/quote]
Thib:
This isn’t a rebuttal, just simple curiosity - so then why doesn’t anyone talk about II? Why always GI? Your explanation makes so much more sense and is practical!
[/quote]
Because currently very foods have been tested for their insulin index.
From ‘‘The anabolic power of insulin’’
RW Ã?¢?? What’s the difference between the well known glycemic index (GI) and this insulin index (II) you’re referring to?
JB �¢?? The popular glycemic index is a measure of the speed at which carbohydrates enter the blood after a meal. A high-glycemic index means that blood sugar rises rapidly in response to a meal while a low-glycemic index means that blood sugar rises very slowly. Traditionally, nutritionists thought that the faster the carbs got into the blood, the bigger the insulin response. So in an attempt to manage insulin, they recommended always eating low-glycemic foods.
However, several studies since have shown that some low glycemic index foods have huge insulin responses! So the correlation between glycemic index and insulin response breaks down with some foods. For example, milk products have a very low glycemic index. But they promote insulin responses parallel to the highest glycemic foods. What’s the deal? Well, it appears that there are several other factors that determine insulin release besides carb content and the rate of carb absorption.
This is why the insulin index was generated. This index actually measures insulin response to a food. So rather than assuming insulin response is correlated with carb absorption, these researchers decided to go ahead and measure it. And their results were eye opening!
RW �¢?? If a natural bodybuilder is planning their nutrient intake around the insulin index, what foods would they eat and what foods would they avoid?
JB Ã?¢?? One thing to keep in mind is that there is no such thing as a bad food. Well, almost no such thing. I don’t think anyone can make a case for powdered, cream-filled doughnuts, besides the fact that they taste damn good! But I hope you see my point. Since I said earlier that sometimes you want an insulin surge Ã?¢?? especially after workouts Ã?¢?? and sometimes you don’t Ã?¢?? especially at night before bedtime Ã?¢?? we have to realize that we use the insulin index not to condemn foods but to decide when to eat them.
The point I want to stress is that the insulin index helps us add information to the glycemic index to make better food choices. So using both indices is the way to go. Since milk products have a low GI but a high II, these foods aren’t optimal when you want to keep insulin low. Other example foods or meal combinations for this situation are baked beans in sauce, meals with refined sugars and fats, and meals that are protein and carbohydrate rich. Each of these foods/combos have low GI scores but high II scores, none of which are optimal for low insulin times. But remember, some times you want high insulin so don’t relegate these foods/combos to a dark corner of your nutritional closet.
Conversely, unprocessed fibrous grains and cereals as well as fruits and veggies are great on both scales. In addition, most low-fat protein sources are also great on both scales.
You can also read: Strength Training, Bodybuilding & Online Supplement Store - T NATION [/quote]
You have opened my eyes to a whole 'nother facet of carb intake - thanks, Thib.