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Athletes consumed 300\u2005mg\/kg body mass of NaHCO<jats:sub>3<\/jats:sub> or placebo (CaCO<jats:sub>3<\/jats:sub>) 90\u2005min before the combat simulation (three rounds of 2\u00a0min separated by 1\u00a0min passive recovery), in a double\u2010blind, randomized, repeated\u2010measures crossover design. All simulated combat was filmed to quantify the time spent fighting in each round. Lactate concentration [La<jats:sup>\u2212<\/jats:sup>] and rating of perceived exertion (RPE) were measured before and after each round, whereas heart rate (HR) and the estimated contribution of the oxidative (<jats:italic>W<\/jats:italic><jats:sub>OXI<\/jats:sub>), ATP (adenosine triphosphate)\u2010phosphocreatine (PCr) (<jats:italic>W<\/jats:italic><jats:sub>PCR<\/jats:sub>), and glycolytic <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/ejscbf01168-math-0001.png\" xlink:title=\"urn:x-wiley:17461391:ejscbf01168:equation:ejscbf01168-math-0001\"\/> systems were calculated during the combat simulation. <jats:italic>Results<\/jats:italic>: [La<jats:sup>\u2212<\/jats:sup>] increased significantly after NaHCO<jats:sub>3<\/jats:sub> ingestion, when compared with the placebo condition (+14%, <jats:italic>P<\/jats:italic> = 0.04, <jats:italic>d<\/jats:italic> = 3.70). NaHCO<jats:sub>3<\/jats:sub> ingestion resulted in greater estimated glycolytic energy contribution in the first round when compared with the placebo condition (+31%, <jats:italic>P<\/jats:italic> = 0.01, <jats:italic>d<\/jats:italic> = 3.48). Total attack time was significantly greater after NaHCO<jats:sub>3<\/jats:sub> when compared with placebo (+13%, <jats:italic>P<\/jats:italic> = 0.05, <jats:italic>d<\/jats:italic> = 1.15). <jats:italic>W<\/jats:italic><jats:sub>OXI<\/jats:sub>, <jats:italic>W<\/jats:italic><jats:sub>PCR<\/jats:sub>, VO<jats:sub>2<\/jats:sub>, HR and RPE were not different between conditions (<jats:italic>P<\/jats:italic> &gt; 0.05). <jats:italic>Conclusion<\/jats:italic>: NaHCO<jats:sub>3<\/jats:sub> ingestion was able to increase the contribution of glycolytic metabolism and, therefore, improve performance during simulated taekwondo combat.<\/jats:p>","DOI":"10.1080\/17461391.2018.1424942","type":"journal-article","created":{"date-parts":[[2018,1,20]],"date-time":"2018-01-20T11:03:46Z","timestamp":1516446226000},"page":"431-440","update-policy":"https:\/\/doi.org\/10.1080\/tandf_crossmark_01","source":"Crossref","is-referenced-by-count":62,"title":["Sodium bicarbonate ingestion increases glycolytic contribution and improves performance during simulated taekwondo combat"],"prefix":"10.1002","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2033-365X","authenticated-orcid":false,"given":"Jo\u00e3o Paulo","family":"Lopes\u2010Silva","sequence":"first","affiliation":[{"name":"Martial Arts and Combat Sports Research Group School of Physical and Education and Sport University of S\u00e3o Paulo S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3309-4731","authenticated-orcid":false,"given":"Jonatas Ferreira","family":"Da Silva Santos","sequence":"additional","affiliation":[{"name":"Martial Arts and Combat Sports Research Group School of Physical and Education and Sport University of S\u00e3o Paulo S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8463-2213","authenticated-orcid":false,"given":"Guilherme Giannini","family":"Artioli","sequence":"additional","affiliation":[{"name":"Musculoskeletal Physiology Research Group Sport, Health and Performance Enhancement (SHAPE) Research Centre School of Science and Technology Nottingham Trent University Nottingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1309-2568","authenticated-orcid":false,"given":"Irineu","family":"Loturco","sequence":"additional","affiliation":[{"name":"NAR\u2010Nucleus of High Performance in Sport S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3940-5542","authenticated-orcid":false,"given":"Chris","family":"Abbiss","sequence":"additional","affiliation":[{"name":"Centre for Exercise and Sport Science Research School of Medical &amp; 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