Super oxygenated waters manufacturers claim it provides more energy, greater mental awareness and concentration than regular tap water. Although they contain ten times the oxygen content of normal tap water there is no evidence that the body absorbs more oxygen. Research on the products didn't find any benefit to resting heart rate, blood pressure or blood lactate values. According to the resear, the are only two ways to carry oxygen in the blood is when it is bound to hemoglobin or dissolved in the plasma. In most people hemoglobin is already 97 to 98 percent saturated with oxygen.
The bottom line is that there is no scientific evidence to support that drinking super oxygenated water increases the amount of oxygen in the blood stream.
For exercisers the important thing is to maintain proper hydration because dehydration leads to muscle fatigue and loss of coordination. To prevent dehydration drink moderately before, during and after a workout.
Source
John Porcari, PhD, University of Wisconsin