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Healthy adults participated in a double-blind, randomized, placebo-controlled, and cross-over design trial receiving a high-rich carbohydrate meal with either 250 mL of OLT or CON at two different times after a washout period. The sequence order was randomized at a ratio of 1:1. Capillary blood glucose was measured in a 2 h period after ingestion. Eighteen participants were initially randomized. Of these, thirteen completed the trial and were analyzed. The consumption of OLT resulted in a delay in peak time (48.5 \u00b1 4.2 min vs. 35.7 \u00b1 4.0 min, p = 0.03) and a significant increase in glucose area under the curve compared to placebo (14,502.7 \u00b1 640.8 vs. 13,633.3 \u00b1 869.4 mg\/dL\u00b7min, p = 0.03). Results are depicted as mean \u00b1 SEM. The OLT and CON palatability were generally well accepted. No adverse effects were reported. OLT did not ameliorate a glycemic curve induced by carbohydrate-rich meal ingestion, suggesting that at least when ingested acutely in a single meal, OLT does not have antihyperglycemic effects. Future studies should account for chronic consumption providing a better understanding of glycemic regulation over time.<\/jats:p>","DOI":"10.3390\/foods12030528","type":"journal-article","created":{"date-parts":[[2023,1,25]],"date-time":"2023-01-25T04:22:16Z","timestamp":1674620536000},"page":"528","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Olive Leaf Tea Impact on Postprandial Glycemia: A Randomized Cross-Over Trial"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3703-0011","authenticated-orcid":false,"given":"Manuela","family":"Meireles","sequence":"first","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o da Montanha (CIMO), Instituto Polit\u00e9cnico de Bragan\u00e7a, (Mountain Research Center\u2014Polytechnic Institute of Bragan\u00e7a), Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"},{"name":"Laborat\u00f3rio para Sustentabilidade e Tecnologia em Regi\u00f5es de Montanha, Instituto Polit\u00e9cnico de Bragan\u00e7a, (LA SusTEC\u2014Associated Laboratory for Sustainability and Technology in Inland Regions, Polytechnic Institute of Bragan\u00e7a), Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]},{"given":"Anna","family":"Cortez-Ribeiro","sequence":"additional","affiliation":[{"name":"Polytechnic Institute of Bragan\u00e7a, Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]},{"given":"Denise","family":"Polck","sequence":"additional","affiliation":[{"name":"Polytechnic Institute of Bragan\u00e7a, Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2578-3684","authenticated-orcid":false,"given":"Juliana","family":"Almeida-de-Souza","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o da Montanha (CIMO), Instituto Polit\u00e9cnico de Bragan\u00e7a, (Mountain Research Center\u2014Polytechnic Institute of Bragan\u00e7a), Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"},{"name":"Laborat\u00f3rio para Sustentabilidade e Tecnologia em Regi\u00f5es de Montanha, Instituto Polit\u00e9cnico de Bragan\u00e7a, (LA SusTEC\u2014Associated Laboratory for Sustainability and Technology in Inland Regions, Polytechnic Institute of Bragan\u00e7a), Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3782-9264","authenticated-orcid":false,"given":"Vera","family":"Ferro-Lebres","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o da Montanha (CIMO), Instituto Polit\u00e9cnico de Bragan\u00e7a, (Mountain Research Center\u2014Polytechnic Institute of Bragan\u00e7a), Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"},{"name":"Laborat\u00f3rio para Sustentabilidade e Tecnologia em Regi\u00f5es de Montanha, Instituto Polit\u00e9cnico de Bragan\u00e7a, (LA SusTEC\u2014Associated Laboratory for Sustainability and Technology in Inland Regions, Polytechnic Institute of Bragan\u00e7a), Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,24]]},"reference":[{"key":"ref_1","unstructured":"World Health Organization (2022, September 07). 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