Not that it's any surprise, a simple calculation of the oxygen content of these products is all you need to know...
From NCAHF consumer health digest (nov 18. 2003):
"Study debunks "oxygenated water." A double-blind study has found no evidence that drinking "oxygenated water" enhances exercise performance. The study involved 11 healthy adults who drank 12 ounces of water either siphoned from a sealed bottle or taken from a bottle that had been deoxygenated by agitation in air. The waters were advertised to contain 7 to 40 times more oxygen than ordinary water and to enhance sports performance and improve cardiovascular and muscle endurance. However the researchers found although four of the five brands had some extra oxygen dissolved, the total was less was less than advertised and less than the amount found in a single breath. The researchers concluded:
Given that hemoglobin is already nearly saturated with O2 during air breathing, and that only a small amount of additional O2 can be dissolved in plasma, it is not surprising that oxygenated water did not improve maximal exercise performance. Furthermore, given the small amount of oxygen in bottled water compared with that in air, any benefit would likely be quite brief. [Hampson NB and others. Oxygenated water and athletic performance. JAMA 290:2408-2409, 2003]"
From NCAHF consumer health digest (nov 18. 2003):
"Study debunks "oxygenated water." A double-blind study has found no evidence that drinking "oxygenated water" enhances exercise performance. The study involved 11 healthy adults who drank 12 ounces of water either siphoned from a sealed bottle or taken from a bottle that had been deoxygenated by agitation in air. The waters were advertised to contain 7 to 40 times more oxygen than ordinary water and to enhance sports performance and improve cardiovascular and muscle endurance. However the researchers found although four of the five brands had some extra oxygen dissolved, the total was less was less than advertised and less than the amount found in a single breath. The researchers concluded:
Given that hemoglobin is already nearly saturated with O2 during air breathing, and that only a small amount of additional O2 can be dissolved in plasma, it is not surprising that oxygenated water did not improve maximal exercise performance. Furthermore, given the small amount of oxygen in bottled water compared with that in air, any benefit would likely be quite brief. [Hampson NB and others. Oxygenated water and athletic performance. JAMA 290:2408-2409, 2003]"
