Young people got protection from one bout of exercise, and their response to the oxidative stress challenge was lower.

Traustadottir said, “We found that young people got protection from one bout of exercise, and their response to the oxidative stress challenge was lower. The older participants did not have a protective effect after one exercise session, which may be related to impaired cell signaling, a process that could potentially be improved with regular workouts.”
The ongoing research aims to identify where in the cell's processes specific age-related changes take place. With better understanding of cell signaling and the beneficial effects of exercise or phytonutrient supplementation, definitive recommendations could be made for improving the body's reaction to oxidative stress, which could lower the risk for many chronic diseases.
The study is published in ‘Age’, the Journal of the American Aging Association.
Source-Medindia