L-Carnitine New Study...

TIFnFIT

Here is an interesting article about using an L-Carnitine supplement. I have used it in the past, but no where near the amount they recommend. I just purchase the liquid 1500mg bottle and started today. Does anyone else have any experience with this supplement and if so, when did you take it, ie: before working out or after?

http://bareskintowels.wordpress.com/2012/02/21/l-carnitine-for-athletes-myth-or-magic/

Acg67

Effect of glycine propionyl-L-carnitine on aerobic and anaerobic exercise performance. Int J Sport Nutr Exerc Metab 2008, 18(1):19-36
http://www.ncbi.nlm.nih.gov/sites/entrez/18272931?dopt=Abstract&holding=f1000,f1000m,isrctn

There were no statistical differences (p> .05) between or within the 3 groups for any performance-related variable or muscle carnitine concentrations after 8 wk of supplementation and training. These results suggest that up to 3 g/d GPLC for 8 wk in conjunction with aerobic-exercise training is ineffective for increasing muscle carnitine content and has no significant effects on aerobic- or anaerobic-exercise performance.

Supplemental carnitine and exercise. Am J Clin Nutr 2000, 72(2 Suppl):618S-23S.
http://www.ajcn.org/content/72/2/618S.long

the preponderance of experimental data suggest that carnitine supplementation does not modify exercise performance in healthy humans.

L-Carnitine supplementation combined with aerobic training does not promote weight loss in moderately obese women. Int J Sport Nutr Exerc Metab 2000, 10(2):199-207

Eight weeks of L-C ingestion and walking did not significantly alter the TBM or FM of overweight women, thereby casting doubt on the efficacy of L-C supplementation for weight loss.