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首页> 外文期刊>Journal of the International Society of Sports Nutrition >Ingestion of oxygenated water enhances lactate clearance kinetics in trained runners
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Ingestion of oxygenated water enhances lactate clearance kinetics in trained runners

机译：摄入含氧水可增强训练有素的跑步者的乳酸清除动力学

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BackgroundDrinks with higher dissolved oxygen concentrations have in recent times gained popularity as a potential ergogenic aid, despite a lack of evidence regarding their efficacy. The aim of this study was to assess effects of ingestion of an oxygen supplement (OS) on exercise performance and post-exercise recovery in a group of trained runners. MethodsTrained male runners ( n?= 25, mean?±?SD; age 23?±?6 years, mass 70?±?9 kg, BMI 21.9?±?2.7 kg.m?2 VO2max 64?±?6mL.kg?1.min?1), completed a randomised double blinded, crossover study to assess the effect of ingestion of OS solution on exercise performance and recovery. Trials consisted of a 30min rest period, 5min warm-up, a 5000m treadmill time-trial, and a 30min passive recovery. Participants ingested 6x15mL of either OS or a taste matched placebo during the trials (3 during the rest phase, 1 during exercise and 2 during the recovery). Muscle tissue O2 saturation was measured via near infrared spectroscopy. Blood lactate concentrations were measured prior to, mid-way and directly after the finish of the 5000m time trials and every 3-min during the post-exercise recovery. ResultsIngestion of OS did not improve exercise performance. No significant differences were observed for muscle tissue O2 saturation at any time-points. However, lactate clearance was significantly improved during recovery in the OS trials. Both AUC (109?±?32 vs. 123?±?38 mmol.min, P 0.05, d?=?0.40) and lactate half-life (λ) (1127?±?272 vs. 1223?±?334 s, P 0.05, d?=?0.32) were significantly reduced. ConclusionsDespite no evidence of improved exercise performance, ingestion of OS did enhance post-exercise recovery via increased lactate clearance.
机译：背景技术尽管缺乏关于其功效的证据，但具有较高溶解氧浓度的饮料近来已作为一种潜在的促生剂而广受欢迎。这项研究的目的是评估一组训练有素的跑步者摄入氧气补充剂（OS）对运动表现和运动后恢复的影响。方法训练有素的男运动员（n = 25，平均±±SD;年龄23±6岁，体重70±9 kg，体重指数21.9±2.7 kg.m ？2 VO 2 最大64？±？6mL.kg ？1 .min ？1 ），完成了一项随机双盲交叉研究以评估效果摄入OS解决方案对运动表现和恢复的影响。试验包括30分钟的休息时间，5分钟的热身，5000m跑步机时间试验和30分钟的被动恢复。在试验期间，参与者摄入了6x15mL的OS或与口味匹配的安慰剂（休息阶段3次，运动期间1次，恢复期间2次）。通过近红外光谱法测量肌肉组织的O 2 饱和度。在5000m时间试验结束之前，过程中途和之后直接以及运动后恢复期间每3分钟测量一次血液中的乳酸浓度。结果摄入OS并不能改善运动表现。在任何时间点，肌肉组织的O 2 饱和度均无显着差异。但是，在OS试验的恢复过程中，乳酸清除率显着提高。 AUC（109？±？32 vs. 123？±？38 mmol.min，P 0.05，d？=？0.40）和乳酸半衰期（λ）（1127？±？272 vs. 1223？±？334 s ，P ＜0.05，d≥0.32）显着降低。结论尽管没有证据表明可以改善运动表现，但是摄入OS确实可以通过增加乳酸清除率来提高运动后的恢复能力。

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