Well I'm asking you guys to post some of these studies, proving they are useless. After all he says it's useful, prove him wrong, can you?
The addition of glutamine to a CHO + EAA beverage had no effect on post-exercise muscle glycogen resynthesis or muscle protein synthesis.
Appl Physiol Nutr Metab. 2006 Oct;31(5):518-29.
It is concluded that ingestion of a glutamine/carbohydrate mixture does not increase the rate of glycogen resynthesis in muscle. Glycogen resynthesis rates were higher, although not statistically significant, after ingestion of the drink containing the wheat and whey protein hydrolysate compared to ingestion of the control and free glutamine drinks.
Int J Sports Med. 2000 Jan;21(1):25-30.
We conclude that glutamine supplementation during resistance training has no significant effect on muscle performance, body composition or muscle protein degradation in young healthy adults.
Eur J Appl Physiol. 2001 Dec;86(2):142-9.
These data indicate that the short-term ingestion of glutamine does not enhance weightlifting performance in resistance-trained men.
J Strength Cond Res. 2002 Feb;16(1):157-60.
We conclude that intravenous infusion of amino acids increases the fractional rate of mixed muscle protein synthesis, but addition of glutamine to the amino acid mixture does not further stimulate muscle protein synthesis rate in healthy young men and women.
Metabolism. 2000 Dec;49(12):1555-60.
lemme know if you want more...