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November 12, 2003

Oxygenated Water and Athletic Performance

Author Affiliations

Letters Section Editor: Stephen J. Lurie, MD, PhD, Senior Editor.

JAMA. 2003;290(18):2408-2409. doi:10.1001/jama.290.18.2408-a

To the Editor: Bottled waters described as "oxygenated" are sold with claims that they confer health benefits. The waters are advertised to contain 7 to 40 times more oxygen (O2) than ordinary water and to enhance exercise, with statements such as "enhanced sports performance"1 and "improves cardiovascular and muscle endurance"2 commonly used. We measured O2 in oxygenated water and assessed its effect on maximal performance during exercise.

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