[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100603393":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":31,"centralContacts":36,"locations":45,"responsibleParty":60,"collaborators":26,"id":63,"slug":64,"hasResults":65,"nctId":66,"briefTitle":67,"officialTitle":68,"acronym":26,"eligibilityCriteria":69,"healthyVolunteers":70,"sex":71,"minAge":72,"maxAge":73,"enrollmentInfo":74,"targetDuration":26,"studyType":77,"phases":78,"briefSummary":80,"conditions":81,"keywords":88,"overallStatus":47,"whyStopped":26,"lastUpdateSubmitDate":95,"lastUpdatePostDateStruct":96,"startDateStruct":99,"completionDateStruct":101,"leadSponsor":103,"locationsCount":104},{"fullName":5,"class":6},"Palacky University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Placebo Comparator","PLACEBO_COMPARATOR","Placebo: Food-grade starch Participants will ingest 300 mg·kg-¹ body mass of food-grade starch encapsulated in gelatin capsules 60-90 minutes prior to the simulated 200 m Bi-Fins race.\n\nDietary Supplement: Placebo Gelatin capsules filled with food-grade starch, indistinguishable in appearance from sodium bicarbonate capsules. Water is consumed ad libitum during ingestion.\n\nOther Names: Placebo Capsules",[13],"Dietary Supplement: Placebo",{"label":15,"type":16,"description":17,"interventionNames":18},"Sodium Bicarbonate (NaHCO₃)","EXPERIMENTAL","Sodium Bicarbonate: NaHCO₃ Participants will ingest 300 mg·kg-¹ body mass of sodium bicarbonate encapsulated in gelatin capsules 60-90 minutes prior to the simulated 200 m Bi-Fins race.\n\nDietary Supplement: Sodium Bicarbonate Gelatin capsules containing sodium bicarbonate (NaHCO₃), matched in appearance, weight, and texture to placebo. Water is consumed ad libitum during ingestion.\n\nOther Names: NaHCO₃ Capsules",[19],"Dietary Supplement: Sodium Bicarbonate (NaHCO3)",[21,27],{"type":22,"name":23,"description":24,"armGroupLabels":25,"otherNames":26},"DIETARY_SUPPLEMENT","Sodium Bicarbonate (NaHCO3)","Gelatin capsules each containing 1g sodium bicarbonate (NaHCO₃)",[15],null,{"type":22,"name":28,"description":29,"armGroupLabels":30,"otherNames":26},"Placebo","Gelatin capsules each containing 1g food-grade starch",[9],[32],{"name":33,"affiliation":34,"role":35},"Tomáš Michalica, Mgr.","Palacký University, Faculty of Physical Culture","PRINCIPAL_INVESTIGATOR",[37,41],{"name":33,"role":38,"phone":39,"phoneExt":26,"email":40},"CONTACT","+420605320688","tomas.michalica01@upol.cz",{"name":42,"role":38,"phone":43,"phoneExt":26,"email":44},"Zbyněk Svozil, Assoc. Prof.","+420 585 636 111","zbynek.svozil@upol.cz",[46],{"facility":34,"status":47,"city":48,"state":49,"zip":50,"country":51,"countryCode":26,"cosmosGeoPoint":52,"geoPoint":57,"contacts":58},"RECRUITING","Olomouc","Olomouc Region","77900","Czechia",{"type":53,"coordinates":54},"Point",[55,56],17.25175,49.59552,{"lat":56,"lon":55},[59],{"name":33,"role":38,"phone":39,"phoneExt":26,"email":40},{"type":35,"investigatorFullName":61,"investigatorTitle":62,"investigatorAffiliation":5,"oldNameTitle":26,"oldOrganization":26},"Tomáš Michalica","Principal Investigator, Doctoral Researcher and Assistant Lecturer, Faculty of Physical Culture, Palacký University Olomouc","100603393","effects-of-single-sodium-bicarbonate-supplementation-on-national-level-finswimming-performance-100603393",false,"NCT07135934","Effects of Single Sodium Bicarbonate Supplementation on National-Level Finswimming Performance","Evaluation of the Effects of Single Sodium Bicarbonate Supplementation on Finswimming Performance of National Level Finswimmers: A Randomized, Double-Blind, Placebo-Controlled Crossover Study","Inclusion Criteria:\n\n1. Member of a wider national selection in finswimming (junior or senior level)\n2. Regular participation in competitive finswimming training (≥4 sessions per week)\n3. Age between 15 and 30 years\n4. Absence of chronic illness or injury\n5. No use of medications or dietary supplements during the study period\n6. Signed informed consent (for minors, also signed by a legal guardian)\n\nExclusion Criteria:\n\n1. History of gastrointestinal disorders affecting supplement tolerance\n2. Presence of cardiovascular, metabolic, or musculoskeletal disorders\n3. Current illness or acute infection\n4. Regular use of substances that may interfere with acid-base balance\n5. Refusal to comply with pre-test restrictions (e.g., 48 hours without training)",true,"ALL","15 Years","30 Years",{"count":75,"type":76},20,"ESTIMATED","INTERVENTIONAL",[79],"NA","This randomized, double-blind, placebo-controlled crossover trial will investigate the acute effects of sodium bicarbonate supplementation on performance, stroke biomechanics, and selected physiological and perceptual responses during a simulated 200-meter Bi-Fins race in elite finswimmers.",[82,83,84,85,86,87],"Sport Performance","Acid Base Imbalance","Ergogenic Support","Sodium Bicarbonate","Water Sports","Biomechanics",[85,89,90,91,92,87,93,94],"Stroke Rate","Finswimming","Stroke Length","Athletes","Gastrointestinal Discomfort","Rate of Perceived Exertion","2025-08-20",{"date":97,"type":98},"2025-08-22","ACTUAL",{"date":100,"type":98},"2025-07-01",{"date":102,"type":76},"2026-12-20",{"name":5,"class":6},1]