Filed under: Nutrition
Q. Since a lot of fructose (albeit hard to consume just from fruit) can
give those with malabsorption issues problems and grains are vastly
overrated nutritionally and also give a lot of individuals issues
related to food intolerances, wouldn’t we still want a bit of glucose
+ maltodextrin or waxy maize (even though the latter two may still
pose issues for those with grain sensitivities)? Above and beyond
glycogen re-synthesis, wouldn’t spiking insulin to help drive amino
acids into the muscles at a time when protein synthesis is elevated be
an additional goal of PW nutrition?
It seems like the best idea might be to include a glucose/maltodextrin
blend up until a certain amount of the alotted PW carbs and then
consume the rest of the “remaining” PW carbs from fresh fruits. Or do
you feel that a whey hydrolysate or isolate + some additional leucine
is enough to trigger muscle protein synthesis and spike insulin?
Thank you for your time.
A. Well this is a pretty loaded question. OK lets start with the first part. While it is true that a lot of fructose can cause malabsorption issues, that would require A LOT of fruit. I tend to recommend people consume a banana, maybe with a cup of frozen strawberries. That won’t cause issues, what it will do is promote better fuel oxidation as it has been shown that we run better when consuming at least 2 different carb sources. Also combining fructose and glucose helps the rehydration process more than just glucose alone. Since I also recommend milk (usually whole, depends on the person and situation) that also increases the rehydration process significantly.
I would also agree that grains tend to be overrated, but if people really need a significant amount of carbs post training, then I would rather they get them from say oats than maltodextrin, I almost always pick the food with more nutrient density. An example post training shake for a large athlete who is trying to gain mass might be something like:
- 16oz Organic Whole Fat Milk
- 1 scoop Whey (I like Biotest Grow)
- 1 banana
- 1 cup frozen strawberries
- 1/2 cup oats
- 5 grams creatine
- 5 grams leucine
This way you are still getting a whey/casein blend, milk is very insulinogenic, whole milk is excellent post training, and getting your carbs from more nutritious sources. The idea of needing a HUGE insulin spike is overrated. If you read a lot of Alan Aragon’s work, which I would highly recommend, he also points out that the initial increase in protein synthesis occurs in the absence of insulin. The insulin mediated increase occurs much later, and that shake will have certainly spiked insulin enough at that point to continue that process. Between the milk, whey, carbs, and free leucine there will be plenty of insulin hanging around. New research is clearly showing that speed of delivery is not the greatest factor in recovery and growth from training. If speed was the greatest factor, then whey would defeat casein in post training shakes, though it does not. We want some fast, and some slow to reap all the benefits for optimal gains.
So in the end, yes I think this is more than adequate to increase protein synthesis, decrease protein breakdown, and increase glycogen resynthesis all while contributing a boatload more vitamins, minerals, electrolytes, and phytonutrients. This will also help you reach your fruit and veggies quota, and build maximal amounts of muscle. It just seems to me that if this is going to one of, if not the biggest serving of carbs in the diet, I would much rather see people consume carbs with nutrients, than refined sugars. There are always exceptions to the rule, but I tend to lean this way for the majority.
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