Institute of Human Nutrition and Dietetics, Poznan University of Life Sciences, 60-624 Poznań, Poland.
Polish Wrestling Federation, 00-871 Warsaw, Poland.
Nutrients. 2018 May 30;10(6):697. doi: 10.3390/nu10060697.
Gastrointestinal side effects are the main problem with sodium bicarbonate (SB) use in sports. Therefore, our study assessed the effect of a new SB loading regimen on anaerobic capacity and wrestling performance. Fifty-eight wrestlers were randomized to either a progressive-dose regimen of up to 100 mg∙kg of SB or a placebo for 10 days. Before and after treatment, athletes completed an exercise protocol that comprised, in sequence, the first Wingate, dummy throw, and second Wingate tests. Blood samples were taken pre- and post-exercise. No gastrointestinal side effects were reported during the study. After SB treatment, there were no significant improvements in the outcomes of the Wingate and dummy throw tests. The only index that significantly improved with SB, compared to the placebo ( = 0.0142), was the time-to-peak power in the second Wingate test, which decreased from 3.44 ± 1.98 to 2.35 ± 1.17 s. There were also no differences in blood lactate or glucose concentrations. In conclusion, although the new loading regimen eliminated gastrointestinal symptoms, the doses could have been too small to elicit additional improvements in anaerobic power and wrestling performance. However, shortening the time-to-peak power during fatigue may be particularly valuable and is one of the variables contributing to the final success of a combat sports athlete.
胃肠道副作用是运动中使用碳酸氢钠（SB）的主要问题。因此，我们的研究评估了新的 SB 负荷方案对无氧能力和摔跤表现的影响。58 名摔跤手被随机分为接受高达 100mg/kg SB 的递增剂量方案或安慰剂治疗 10 天。在治疗前后，运动员完成了一个运动方案，包括第一 Wingate、假人投掷和第二 Wingate 测试。在运动前后采集血样。在研究过程中没有报告胃肠道副作用。在接受 SB 治疗后，Wingate 和假人投掷测试的结果没有显著改善。与安慰剂相比，只有第二 Wingate 测试中的峰值功率时间（ = 0.0142）显著改善，从 3.44±1.98 秒降至 2.35±1.17 秒。血乳酸和葡萄糖浓度也没有差异。总之，尽管新的负荷方案消除了胃肠道症状，但剂量可能太小，无法在无氧能力和摔跤表现方面进一步提高。然而，在疲劳期间缩短达到峰值功率的时间可能特别有价值，是影响搏击运动员最终成功的因素之一。
