snorkelman
10-08-2009, 10:10 AM
December 2009 Muscle & Fitness arrived yesterday and on page 48 it makes the above claim with regard to amino acids in the subjects' plasma and more muscle protein synthesis.
They referenced the following study in support:
Ingestion of a protein hydrolysate is accompanied by an accelerated in vivo digestion and absorption rate when compared with its intact protein Am J Clin Nutr 90: 106-115, 2009. Rene Koopman, et. al
Basically from the abstract I can see that they looked at elderly men and the results were that muscle protein synthesis rates averaged 0.054 +/- 0.004% and 0.068 +/- 0.006%/h in the CAS (intact casein) and CASH (hydrolyzed casein) treatments, respectively (P = 0.10).
CONCLUSIONS: Ingestion of a protein hydrolysate, as opposed to its intact protein, accelerates protein digestion and absorption from the gut, augments postprandial amino acid availability, and tends to increase the incorporation rate of dietary amino acids into skeletal muscle protein.
I cannot locate a free full version of the study so all I have is the abstract.
Anyone look at this yet?
They referenced the following study in support:
Ingestion of a protein hydrolysate is accompanied by an accelerated in vivo digestion and absorption rate when compared with its intact protein Am J Clin Nutr 90: 106-115, 2009. Rene Koopman, et. al
Basically from the abstract I can see that they looked at elderly men and the results were that muscle protein synthesis rates averaged 0.054 +/- 0.004% and 0.068 +/- 0.006%/h in the CAS (intact casein) and CASH (hydrolyzed casein) treatments, respectively (P = 0.10).
CONCLUSIONS: Ingestion of a protein hydrolysate, as opposed to its intact protein, accelerates protein digestion and absorption from the gut, augments postprandial amino acid availability, and tends to increase the incorporation rate of dietary amino acids into skeletal muscle protein.
I cannot locate a free full version of the study so all I have is the abstract.
Anyone look at this yet?