Probiotics and oxidative stress
By Admin | Wednesday, June 15, 2011 1:16:47 PM America/New_York
After intense training, the control group had very high levels of reactive oxygen metabolites, but those who received probiotic supplements saw very little oxidative stress. In this study it seemed that probiotic supplements increased antioxidant production during exercise, as plasma antioxidant levels were elevated with exercise in the probiotic supplemented group only.
Although this study is intriguing, more research needs to be done investigating how probiotics may promote ergogenic effects. For example, it is known that elevated levels of reactive oxygen species limit nitric oxide (a vasodilator) production and lead to vascular dysfunction. Thus, in this case, keeping antioxidants high and oxidative stress low would help to increase blood flow to working muscles.
Martarelli D, Verdenelli MC, Scuri S, Cocchioni M, Silvi S, Cecchini C, Pompei P.
Effect of a probiotic intake on oxidant and antioxidant parameters in plasma of athletes during intense exercise training. Curr Microbiol. 2011 Jun;62(6):1689-96. Epub 2011 Mar 12.