[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"leadSponsorName\":\"Universidad Autonoma de Chihuahua\",\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:":44},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,1,0,[8],{"id":9,"slug":4,"hasResults":10,"nctId":11,"briefTitle":12,"officialTitle":13,"acronym":4,"eligibilityCriteria":14,"healthyVolunteers":15,"sex":16,"minAge":17,"maxAge":18,"enrollmentInfo":19,"targetDuration":4,"studyType":22,"phases":23,"briefSummary":25,"conditions":26,"keywords":30,"overallStatus":32,"whyStopped":4,"lastUpdateSubmitDate":33,"lastUpdatePostDateStruct":34,"startDateStruct":37,"completionDateStruct":39,"leadSponsor":41,"locationsCount":4},"100629324",false,"NCT07473193","Beetroot Beverage and Repeated Sprint Power Output During RAST","\"Effects of a Beetroot-Based Functional Beverage on Repeated Sprint Performance: A Randomized, Double-Blind, Placebo-Controlled Crossover Trial\"","Inclusion Criteria:\n\n* Healthy trained athletes\n\nAge between 18-35 years\n\nRegular training ≥3 times\u002Fweek\n\nNo cardiovascular or metabolic disease\n\nExclusion Criteria:Healthy trained athletes\n\nAge between 18-35 years\n\nRegular training ≥3 times\u002Fweek\n\nNo cardiovascular or metabolic disease\n\n\\-",true,"MALE","18 Years","35 Years",{"count":20,"type":21},10,"ESTIMATED","INTERVENTIONAL",[24],"NA","This randomized, double-blind, placebo-controlled crossover trial aims to evaluate the acute effects of a nitrate-rich beetroot-based beverage on repeated sprint performance in trained athletes.\n\nTen athletes will complete two experimental conditions in randomized order: beetroot beverage (BET) and placebo (PLA), separated by a 7-day washout period. The beetroot beverage consists of 200 mL of a mixture containing beetroot, cocoa, and green tea, providing approximately 6.4 mmol of nitrate.\n\nIn each condition, participants will perform a Running Anaerobic Sprint Test (RAST), consisting of six maximal 35-meter sprints with 10 seconds of passive recovery between sprints. The primary outcome is mean power output across the six sprints.\n\nSecondary outcomes include fatigue index, sprint-by-sprint power output, heart rate, rating of perceived exertion (Borg 6-20 scale), maximal oxygen uptake (VO₂max), and sleep quality assessed using the Insomnia Severity Index (ISI).",[27,28,29],"Repeated Sprint Performance in Trained Athletes","Exercise Performance","Nitrate Supplementation",[31],"Beetroot juice","NOT_YET_RECRUITING","2026-03-10",{"date":35,"type":36},"2026-03-16","ACTUAL",{"date":38,"type":21},"2026-03-12",{"date":40,"type":21},"2026-04-30",{"name":42,"class":43},"Universidad Autonoma de Chihuahua","OTHER",""]