Maybe I read the article differently, but a couple of things jumped out at me:
<div></div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">Our results suggest that a slowly digested protein induces a better postprandial utilization than a fast one.</div> and <div></div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">With these calculations, we confirm a better (P < 0.05) protein utilization over 7 h after the slow meals (CAS, 0.78 ± 0.04; RPT-WP, 0.80 ± 0.07) than after the fast meals (AA, 0.62 ± 0.06; WP, 0.66 ± 0.03).</div> These are in regard to nitrogen balance.
However, it sounds like the faster digesting proteins raised Amino acid levels in the blood stream to a much larger degree (increasing protein synthesis), albeit for much shorter periods of time (a spike for the whey vs. a plateu for the casein). I noticed too that the whey and AA both rasied blood sugar levels whereas the slower digesting proteins didn't (basically).
Personally, I'm using true protein's casein mixture with aminogen. I'm wondering if the study was done with additional protease enzymes in the whey and casein, if the amino acid levels in the bloodstream would have been higher? Supposedly, something like aminogen doubles the amount of aminos extracted from protein during digestion.
I'd like to read the opinions of others on the board as well, because I'm very new at interpreting study results, however, this seemed to be one of the easier studies to read.