People who suffer from chronic obstructive pulmonary disease (COPD) often lose the ability to do the simple activities due to muscle fatigue.
The researches in this test theorized that they may be secondary to free radical damage and oxidative stress. To test this theory they gave COPD patients either an IV of vitamin C or placebo.
The results of the tests showed that those receiving vitamin C when exercising had much less muscle fatigue and were able to breathe slower and better than those on placebo. The vitamin C group also had lower resting blood pressure and had better blood flow.
These results indicate that targeting oxidative stress may be a way to help relieve the symptoms of COPD.