Looking for a cheap, health and easy way to improve your endurance? Brazilian researchers may have found an answer.
In a study done on a group of recreational runners, the researchers found that consuming grape juice for 28 days improved endurance by over 15 percent compared to a control group that consumed grape-flavored water.
The study found no differences in aerobic capacity or anaerobic threshold. Grape juice increased total antioxidant capacity and vitamin A, but had no effect on C-reactive protein, a measure of inflammation. If the results can be replicated, consuming grape juice might be an effective, healthy way of promoting metabolic health and improving endurance capacity.
Source: Applied Physiology Nutrition Metabolism, 40: 899-906, 2015