Here's a very recent stud by Hoffman, et al.
The increase in Lean muscle in the BA+C group compared to the just C was surprising and very promising for BA. The other thing that got me was the decrease in percent body fat with the BA +C group compared to the just creatine group, that didn't lose any body fat.
The two main points I get from the results on body fat are: One it could shows synergy between BA/C on fat metabolism or Two, the BA itself was causing the change in body fat lose by itself. Since the studies so far show NO SYNERGY between BA and C, I’m going to go with number 2
Shame they didn't have a just Beta-Alanine group to compare against the creatine group.
IJSNEM, 16(4), August 2006, Copyright © 2006
Effect of Creatine and ß-Alanine Supplementation on Performance and Endocrine Responses in Strength/Power Athletes
Jay Hoffman; Nicholas A. Ratamess; Jie Kang; Gerald Mangine; Avery Faigenbaum; Jeffrey Stout Table of Contents for Vol. 16, Iss. 4
Abstract
The effects of creatine and creatine plus ß-alanine on strength, power, body composition, and endocrine changes were examined during a 10-wk resistance training program in collegiate football players. Thirty-three male subjects were randomly assigned to either a placebo (P), creatine (C), or creatine plus ß-alanine (CA) group. During each testing session subjects were assessed for strength (maximum bench press and squat), power (Wingate anaerobic power test, 20-jump test), and body composition. Resting blood samples were analyzed for total testosterone, cortisol, growth hormone, IGF-1, and sex hormone binding globulin. Changes in lean body mass and percent body fat were greater (P < 0.05) in CA compared to C or P. Significantly greater strength improvements were seen in CA and C compared to P. Resting testosterone concentrations were elevated in C, however, no other significant endocrine changes were noted.
Results of this study demonstrate the efficacy of creatine and creatine plus ß-alanine on strength performance. Creatine plus ß-alanine supplementation appeared to have the greatest effect on lean tissue accruement and body fat composition.