Hey Marc, great to hear from you!
Your comment about glutamine being a substitute for carbs isn’t too far off. In fact, most of the effects of glutamine can be achieved by using glucose!
There is one study showing that post cardio, glutamine stimulated glycogen resynthesis to the same extent as glucose. I don’t think this would hold if more glucose were used following resistance training, but it’s splitting hairs.
The problem is that protein synthesis won’t get the boost from glutamine like it would from carbs (and the subsequent insulin stimulation). Further, you have to wonder what the effects of having full liver glycogen has on fat loss.
As for repairing the GI tract, glutamine seems to be of benefit here. In fact, if you ever see studies in animals/humans showing that glutamine enhanced “protein synthesis”, it’s all because of the gut.
While this is normally a problem, because most glutamine is used by the gut before it ever gets to muscle, it can be a good thing when it comes to GI repair. Then again, glutamine doesn’t seem to do much once it hits the muscle anyway, so maybe gut use isn’t a bad thing for muscle after all.
Hi from the University of Waterloo …I used to work out with you up in the ol’ Varsity gym
Anyway, to the point. Two questions:
i) What do you think of glutamine in it’s roles post-workout nutrition ? Charles Poliquin and others seems to like to use it post-workout instead of carbs if your BF is greater than 10%. In your opinions, is this just a really expensive substitute for carbs or is there some method to his madness ?
ii) Again, regarding glutamine – Charles Poliquin claims that 50g of it is useful in repairing the gut…are you aware of any studies or evidence to support this ? Anecedotal or otherwise…