Department of Food and Nutrition, School of Pharmaceutical Sciences of Araraquara, State University of São Paulo-FCFAR/UNESP, Araraquara-Jaú Highway, km 1, Araraquara, SP, 14801-902, Brazil.
Department of Physical Education, State University of São Paulo (UNESP), 24 A Avenue, 1515, Rio Claro, SP, 13506-900, Brazil.
Amino Acids. 2018 Jan;50(1):189-198. doi: 10.1007/s00726-017-2505-3. Epub 2017 Oct 29.
Taurine can affect the energy system metabolism, specifically the lipid metabolism, since an increase in lipid oxidation may promote carbohydrate savings. We hypothesized that taurine supplementation associated with high-intensity exercise could increase levels of lipolysis, benefiting swimmer performance. Nine male competitive swimmers performed two 400-m front crawl maximal efforts with a 1-week washout, and the athletes received 6 g of taurine (TAU) or placebo (PLA) supplementation 120 min before performing the effort. Oxygen consumption and the contribution of the energy systems were analyzed post effort using a Quark CPET gas analyzer. Blood samples were collected before, and 5 min post the effort for taurine and glycerol analysis. Immediately before and 3, 5, and 7 min post the effort, blood samples from the earlobe were collected to determine lactate levels. An increase of 159% was observed in taurine plasma levels 120 min post ingestion. Glycerol levels were higher in both groups post effort; however, the TAU condition promoted an 8% higher increase than the PLA. No changes were observed in swimmer performance or lactate levels; however, the percentage change in lactate levels (∆[La]) was different (TAU: 9.36 ± 2.78 mmol L; PLA: 11.52 ± 2.19 mmol L, p = 0.04). Acute taurine supplementation 120 min before performing a maximal effort did not improve swimmer performance; however, it increased glycerol plasma levels and reduced both the ∆[La] and lactic anaerobic system contribution.
牛磺酸可以影响能量系统代谢，特别是脂质代谢，因为增加脂质氧化可能促进碳水化合物的节约。我们假设牛磺酸补充剂与高强度运动相结合可以增加脂肪分解水平，从而提高游泳运动员的表现。9 名男性竞技游泳运动员进行了两次 400 米自由泳最大努力，间隔 1 周洗消，运动员在进行努力前 120 分钟接受 6 克牛磺酸（TAU）或安慰剂（PLA）补充。使用 Quark CPET 气体分析仪在运动后分析耗氧量和能量系统的贡献。在运动前和运动后 5 分钟采集血液样本，用于牛磺酸和甘油分析。在运动前和运动后 3、5 和 7 分钟，从耳垂采集血液样本以测定乳酸水平。在摄入后 120 分钟，牛磺酸血浆水平增加了 159%。运动后两组的甘油水平均升高；然而，TAU 条件比 PLA 条件促进了 8%的更高增加。游泳运动员的表现或乳酸水平没有变化；然而，乳酸水平的变化百分比（∆[La]）不同（TAU：9.36±2.78mmol L；PLA：11.52±2.19mmol L，p=0.04）。在进行最大努力前 120 分钟急性补充牛磺酸并未提高游泳运动员的表现；然而，它增加了甘油血浆水平，降低了∆[La]和乳酸无氧系统的贡献。
