Eccentric exercise effect on blood oxidative-stress markers and delayed onset of muscle soreness.

Purpose: This study examined the effects of a single bout of high-intensity eccentric exercise (EE) on blood protein carbonyls, glutathione status, and muscle damage indicators to ascertain whether blood markers of oxidative stress are elevated at the time delayed onset of muscle soreness (DOMS) occurs.

Methods: Eight healthy men (26.5 +/- 1.