title: Effects of purified oxygenated water on exercise performance during acute hypoxic exposure.
abstract: The purpose of this study was to assess the effects of purified oxygenated water on exercise performance under hypoxic conditions. Nine recreational male cyclists (age = 26.6 +/- 5.2 y, weight = 87.6 +/- 19.5 kg, VO2peak = 46.5 +/- 5.9 mL x kg(-1) x min(-1)) completed two 600 kJ cycling time trials under hypoxic conditions (FIO2 = 13.6% O2, Pbar = 641 mmHg) separated by 2 wk. Trials were completed following 3 d ingestion of 35 mL x kg(-1) x d(-1) of control (CON) or experimental (EXP) water. Time to completion, heart rate (HR), rate of perceived exertion (RPE), pulse oximetry (SaO2), blood gases (PcO2 and PcCO2), and lactate were measured during the trials. Hydration was assessed with pre- and post-exercise body weight and 24-h urine specific gravity. Performance, hydration, and blood oxygenation were unaffected by EXP water. Results of this study suggest that purified oxygenated water does not improve exercise performance in moderately active males.
authors.affiliation: Division of Nutrition, Dept of Exercise and Sport Science, University of Utah, Salt Lake City 84112, USA.
authors.forename: Stacie L
authors.initials: SL
authors.lastname: Wing-Gaia
authors.forename: Andrew W
authors.initials: AW
authors.lastname: Subudhi
authors.forename: Eldon W
authors.initials: EW
authors.lastname: Askew
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000531:Altitude; D001642:Bicycling / Q000502:physiology*; D001784:Blood Gas Analysis; D001835:Body Weight / Q000502:physiology; D018592:Cross-Over Studies; D003681:Dehydration / Q000378:metabolism; D004311:Double-Blind Method; D004326:Drinking / Q000502:physiology; D006339:Heart Rate / Q000187:drug effects / Q000502:physiology; D006801:Humans; D000860:Hypoxia / Q000378:metabolism*; D019344:Lactic Acid / Q000378:metabolism; D008297:Male; D010092:Oximetry; D010100:Oxygen / Q000008:administration & dosage* / Q000378:metabolism; D010101:Oxygen Consumption / Q000187:drug effects* / Q000502:physiology; D016482:Urinalysis
chemical_list: D019344:Lactic Acid; D010100:Oxygen