Effect of sodium bicarbonate ingestion during 6 weeks of HIIT on anaerobic performance of college students
Effect of sodium bicarbonate ingestion during 6 weeks of HIIT on anaerobic performance of college students
复制标题
6周HIIT期间摄入碳酸氢钠对大学生无氧表现的影响
DOI：
10.1186/s12970-019-0285-8
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发表时间：
2019
影响因子：
5.1
通讯作者：
Wei
中科院分区：
文献类型：
--
作者：
Jieting Wang;Junqiang Qiu;L. Yi;Zhaoran Hou;D. Benardot;Wei
背景过去的研究发现，运动前摄入碳酸氢钠对高强度运动具有增强表现的作用。本研究的目的是调查连续补充碳酸氢钠 (NaHCO3) 对六周高强度间歇训练 (HIIT) 期间无氧表现的影响。方法将 20 名健康的大学生男性参与者随机分配到 HCO3− 组 (SB) 或安慰剂组 (PL)，每组 10 名受试者。两组均完成了 6 周（3 天/周）的 HIIT，SB 在每个训练日摄入含有 15 g 木糖醇和 0.2 g HCO3−/kg 体重的橙味溶液，PL 摄入不含 HCO3− 的类似饮料。这项研究将6周的训练分为两个不同训练强度的阶段，前3周的训练强度低于后3周。在以下 HIIT 训练课程之前 5 分钟和之后 30 分钟获取用于测量血清 HCO3− 的血液样本：第 1 周，训练课程 1；第3周，第3节训练；第 6 周，训练第 3 节。在训练和补充干预前、中、后进行 3 次 30s Wingate 测试 (WAnT)，在 WAnT 期间获得峰值功率、平均功率和疲劳指数，在 WAnT 后获得血乳酸和心率。结果我们的研究结果表明： 1) SB 的血清 HCO3− 水平在每次训练前后均显着高于 PL (p < 0.05) HIIT； 2) 6 周后，SB组的WAnT相对峰值功率显着更高(p < 0.01)； 3）在测试后SB中，乳酸清除率和WAnT 10分钟后的乳酸清除速度均显着较高（p<0.01）； 4) 6 周后，SB 和 PL 中 WAnT 后 10 分钟的心率恢复率均显着改善（分别为 p< 0.01 和 p< 0.05），导致这些指标在各组之间没有差异。结论这些数据表明，在 HIIT 训练前补充 0.2g/kg 体重水平的 HCO3− 可增强效果HIIT对无氧运动表现的影响，并提高血乳酸清除率和无氧运动后的血乳酸清除速度。
BackgroundPast studies have found that sodium bicarbonate ingestion prior to exercise has a performance-enhancing effect on high-intensity exercise. The aim of this study was to investigate the effects of continuous sodium bicarbonate (NaHCO3) supplementation on anaerobic performance during six weeks of high-intensity interval training (HIIT).MethodsTwenty healthy college-age male participants were randomly assigned to either the HCO3− group (SB) or the placebo group (PL), with 10 subjects in each group. Both groups completed 6 weeks (3 days/week) of HIIT with the SB ingesting an orange-flavored solution containing 15 g xylitol and 0.2 g HCO3−/kg body mass during each training day, and PL ingesting a similar beverage that was HCO3−-free. This study separated 6 weeks of training into two stages with different training intensities, with the first 3 weeks at a lower intensity than the second 3 weeks. Blood samples to measure serum HCO3− were obtained 5 min before and 30 min after the following HIIT training sessions: Week 1, training session 1; week 3, training session 3; week 6, training session 3. Three 30s Wingate tests (WAnT) were conducted before, in the middle, and after the training and the supplementation interventions, with peak power, mean power, and fatigue index obtained during WAnT, and blood lactate and heart rate obtained after WAnT.ResultsOur findings indicate the following: 1) Serum HCO3− level of SB was significantly higher than PL (p < 0.05) both before and after each HIIT; 2) Relative peak power in WAnT was significantly higher in the SB group after 6 weeks (p < 0.01); 3) Lactate clearance rate and the lactate clearance velocity after 10 min of WAnT were both significantly higher in SB in the post-test (p < 0.01); 4) Heart rate recovery rate at 10 min after WAnT in both SB and PL after 6 weeks were significantly improved (p < 0.01 and p < 0.05, respectively), resulting in no difference between groups on these measures.ConclusionsThese data suggest that supplementation of HCO3− at the level of 0.2 g/kg body mass before HIIT training enhances the effect of HIIT on anaerobic performance, and improves the blood lactate clearance rate and the blood lactate clearance velocity following anaerobic exercise.