[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"repeated-sprint-performance-in-trained-athletes\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:repeated-sprint-performance-in-trained-athletes":28},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,1,0,[8],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":4,"eligibilityCriteria":15,"healthyVolunteers":16,"sex":17,"minAge":18,"maxAge":19,"enrollmentInfo":20,"targetDuration":4,"studyType":23,"phases":24,"briefSummary":26,"conditions":27,"keywords":31,"overallStatus":33,"whyStopped":4,"lastUpdateSubmitDate":34,"lastUpdatePostDateStruct":35,"startDateStruct":38,"completionDateStruct":40,"leadSponsor":42,"locationsCount":4},"100629324","beetroot-beverage-and-repeated-sprint-power-output-during-rast-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":21,"type":22},10,"ESTIMATED","INTERVENTIONAL",[25],"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).",[28,29,30],"Repeated Sprint Performance in Trained Athletes","Exercise Performance","Nitrate Supplementation",[32],"Beetroot juice","NOT_YET_RECRUITING","2026-03-10",{"date":36,"type":37},"2026-03-16","ACTUAL",{"date":39,"type":22},"2026-03-12",{"date":41,"type":22},"2026-04-30",{"name":43,"class":44},"Universidad Autonoma de Chihuahua","OTHER"]