on of greater numbers of red blood cells to increase the body's oxygen-carrying capacity. The considerable body of science concerning EPO confirms that the only method by which oxygen capacity can be increased in an athlete is through increasing the number of erythrocytes available in the bloodstream.
While the athletic performance-enhancing claims made with respect to oxygenated water may be of questionable scientific validity, there is also the placebo effect of such products to be considered. Unlike many other sports supplements, pure water is not inherently harmful, and the consumption of oxygenated water is safe. The cost of these products aside, oxygenated water is a proper method with which to obtain the daily recommended water consumption levels. If the athlete believes that he or she is obtaining a physical advantage through the consumption of oxygenated water, the athlete may have created a personal psychological edge.