There are a few books that advocate this.
One is
Grow Young with HGH by Katz (sp?)
Another is a book that might be called,
The Life Extension Revolution by Phillip Lee Miller (sp?)
Katz has a recent book whose title escapes me that reasserts his claims from Grow Young with HGH.
I am currently travelling, so the spelling and authors names is questionable based on my memory.
Some studies seem to support the claims made in the books, others do not. Many seem to think that the younger you are, the better results you will see.
I am not familiar with BCAAs and the GH spike, but have heard of arginine, glutamine, glycine, lysine and ornathine,all on an empty stomach.
The amount of Arginine required is large, 8-30 grams, according to the catalog by
Life Extension Foundation - Highest Quality Vitamins And Supplements and by the books above. Everyone says to start low and work up.
I made a big jump in dosage and almost drove myself to the hospital as I thought I was going to die due to rapid breathing, pulse, face numbness, throat swelling, etc.
I mixed
1. Some Crystal Light (to kill taste of arginine)
2. Nutrex Lipo-6 (caffeinated fat burner)
3. 12 NOW Foods Tri-Amino Capsules (total of about 3 grams arginine, lysine and ornathine each - 4 caps = 1 serving and one service has about a gram of each)
4. 6 grams NOW Foods Arginine powder (arginine, generally speaking is the most awful tasting stuff ever)
5. Some tyrosine because "it was there on the shelf"
Currently I am using either the Nutrex with 8 Tri-Aminos, or BSN NO-Xplode with a little extra arginine powder. My IGF-1 is 239 but I did not test it prior to starting all this so I can't tell you if it has helped. One of the books I have says a valude between 200 -300 is optimal. The NO-Xplode has Arginine AKG (AAKG) which I hear tastes a lot better in its pure form than arginine powder.
If you choose NO-Xplode as something to try, and you are taking it early in the morning on an empty stomach, take the NO-Xplode but don't leave the house for about 6-8 minutes after taking it as everyone I know who takes this needs to Xplode on the toilet soon after drinking.