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--- In Supertraining@
>
> It's worth reading Bryan Chung's analysis of beta-analine studies. He
> concludes:
>
> "So, I'm going to end this series on beta-alanine here for now. My
> conclusion from the clinical trials is that there is insufficient
> evidence, and of the available evidence, there is insufficient
> quality of evidence to support the use of beta-alanine to produce
> performance benefits. This doesn't mean that beta-alanine doesn't
> work, but that we are lacking proof of benefit."
>
> http://evidencebase
>
> Paul Rogers
> Gympie, Australia
>
The below is relevant:
The effects of 10 weeks of resistance training combined with beta-
alanine supplementation on whole body strength, force production,
muscular endurance and body composition.
1: Amino Acids. 2008 Jan 4 [Epub ahead of print] Links
Carnosine (Carn) occurs in high concentrations in skeletal muscle is a
potent physico-chemical buffer of H(+) over the physiological range.
Recent research has demonstrated that 6.4 g.day(-1) of beta-alanine
(beta-ala) can significantly increase skeletal muscle Carn
concentrations (M-[Carn]) whilst the resultant change in buffering
capacity has been shown to be paralleled by significant improvements in
anaerobic and aerobic measures of exercise performance. Muscle
carnosine increase has also been linked to increased work done during
resistance training.
Prior research has suggested that strength training may also increase M-
[Carn] although this is disputed by other studies. The aim of this
investigation is to assess the effect of 10 weeks resistance training
on M-[Carn], and, secondly, to investigate if increased M-[Carn]
brought about through beta-ala supplementation had a positive effect on
training responses. Twenty-six Vietnamese sports science students
completed the study. The subjects completed a 10-week resistance-
training program whilst consuming 6.4 g.day(-1) of beta-ala (beta-ALG)
or a matched dose of a placebo (PLG). Subjects were assessed prior to
and after training for whole body strength, isokinetic force
production, muscular endurance, body composition. beta-Alanine
supplemented subjects increased M-[Carn] by 12.81 +/- 7.97 mmol.kg(-1)
dry muscle whilst there was no change in PLG subjects.
There was no significant effect of beta-ala supplementation on any of
the exercise parameters measured, mass or % body fat. In conclusion, 10
weeks of resistance training alone did not change M-[Carn].
============
Jamie Carruthers
Wakefield, UK
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