12/06/07 

Any health conscious person is likely familiar with the benefits of antioxidants in relation to cancer, heart disease, aging, diabetes, and other disease related conditions. But have you heard the buzz regarding antioxidants related to athletic performance? Does exercise increase the number of “reactive oxygen species”? Does supplementation prevent muscular damage response after an event such as a marathon?

As the antioxidant story unfolds the question is, “Why not try to maximize dietary antioxidant consumption?” Beyond running, antioxidants should be consumed for disease prevention. However, for the young-hearted who find it difficult to focus on long-term health benefits, let us focus on the relationship of antioxidants and performance.

Antioxidants protect runners from molecules called reactive oxygen species (ROS). ROS are most commonly seen in the form of free radicals and are produced as a normal part of metabolism. However, research has shown that exercise increases the production of ROS. The theory is that the increased production of ROS may “overwhelm” the ability of the body to maximize its antioxidant defenses. This can lead to cellular damage because of an increase in oxidative stress on the body. This oxidative stress has been linked to muscle damage, fatigue, and a reduction in immune function. (1)