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标题：Effect of Waters Enriched in O ₂ by Injection or Electrolysis on Performance and the Cardiopulmonary and Acid–Base Response to High Intensity Exercise
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作者：Frédéric N. Daussin ; François Péronnet ; Antoine Charton 等
期刊名称：Nutrients
电子版ISSN：2072-6643
出版年度：2021
卷号：13
期号：12
DOI：10.3390/nu13124320
语种：English
出版社：MDPI Publishing
摘要：Several brands of water enriched with O 2 (O 2-waters) are commercially available and are advertised as wellness and fitness waters with claims of physiological and psychological benefits, including improvement in exercise performance. However, these claims are based, at best, on anecdotal evidence or on a limited number of unreliable studies. The purpose of this double-blind randomized study was to compare the effect of two O 2-waters (~110 mg O 2·L −1) and a placebo (10 mg O 2·L −1, i.e., close to the value at sea level, 9–12 mg O 2·L −1) on the cardiopulmonary responses and on performance during high-intensity exercise. One of the two O 2-waters and the placebo were prepared by injection of O 2. The other O 2-water was enriched by an electrolytic process. Twenty male subjects were randomly allocated to drink one of the three waters in a crossover study (2 L·day −1 × 2 days and 15 mL·kg −1 90 min before exercise). During each exercise trial, the subjects exercised at 95.9 ± 4.7% of maximal workload to volitional fatigue. Exercise time to exhaustion and the cardiopulmonary responses, arterial lactate concentration and pH were measured. Oxidative damage to proteins, lipids and DNA in blood was assessed at rest before exercise. Time to exhaustion (one-way ANOVA) and the responses to exercise (two-way ANOVA [Time; Waters
关键词：performance; reactive oxygen species; VO2 kinetics; endurance exercise