[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100652027":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":31,"centralContacts":36,"locations":46,"responsibleParty":67,"collaborators":26,"id":71,"slug":72,"hasResults":73,"nctId":74,"briefTitle":75,"officialTitle":76,"acronym":77,"eligibilityCriteria":78,"healthyVolunteers":79,"sex":80,"minAge":81,"maxAge":82,"enrollmentInfo":83,"targetDuration":26,"studyType":86,"phases":87,"briefSummary":89,"conditions":90,"keywords":94,"overallStatus":49,"whyStopped":26,"lastUpdateSubmitDate":100,"lastUpdatePostDateStruct":101,"startDateStruct":104,"completionDateStruct":106,"leadSponsor":108,"locationsCount":109},{"fullName":5,"class":6},"The Jerzy Kukuczka Academy of Physical Education in Katowice","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Omega-3 fatty acid supplementation group","EXPERIMENTAL","Participants will received 3.5g EPA+ DHA for 4 weeks",[13],"Dietary Supplement: EPA + DHA supplements",{"label":15,"type":16,"description":17,"interventionNames":18},"Placebo group","PLACEBO_COMPARATOR","Participants will received 3.5g placebo for 4 weeks",[19],"Dietary Supplement: Placebo",[21,27],{"type":22,"name":23,"description":24,"armGroupLabels":25,"otherNames":26},"DIETARY_SUPPLEMENT","EPA + DHA supplements","Participants will randomly assigned to the supplemented group. The supplement will be administered in a dose of 4 capsules twice a day for 4 weeks. Daily dose will contain 3500mg EPA + DHA",[9],null,{"type":22,"name":28,"description":29,"armGroupLabels":30,"otherNames":26},"Placebo","Participants will randomly assigned to the Placebo group. The placebo will be administered in a dose of 4 capsules twice a day for 4 weeks. Daily dose will contain 3500mg MCT.",[15],[32],{"name":33,"affiliation":34,"role":35},"Małgorzata M Michalczyk, Proffesor","Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education in Katowice","STUDY_DIRECTOR",[37,42],{"name":38,"role":39,"phone":40,"phoneExt":26,"email":41},"Małgorzata Magdalena Michalczyk, Professor","CONTACT","+48535016532","m.michalczyk@awf.katowice.pl",{"name":43,"role":39,"phone":44,"phoneExt":26,"email":45},"Grzegorz Henryk Zydek, assistante profesor","504332664","g.zydek@awf.katowice.pl",[47],{"facility":48,"status":49,"city":50,"state":51,"zip":52,"country":53,"countryCode":54,"cosmosGeoPoint":55,"geoPoint":60,"contacts":61},"Jerzy Kukuczka Academy of Physical Education in Katowice","RECRUITING","Katowice","Mikolowska 72a","40-065","Poland","PL",{"type":56,"coordinates":57},"Point",[58,59],19.02173,50.2597,{"lat":59,"lon":58},[62,65],{"name":63,"role":39,"phone":64,"phoneExt":26,"email":41},"Małgorzata Michalczyk, Proffesor","535016532",{"name":66,"role":39,"phone":44,"phoneExt":26,"email":45},"Grzegorz H Zydek, assistance profesor",{"type":68,"investigatorFullName":69,"investigatorTitle":70,"investigatorAffiliation":5,"oldNameTitle":26,"oldOrganization":26},"PRINCIPAL_INVESTIGATOR","Małgorzata Magdalena Michalczyk","profesor","100652027","the-impact-of-omega-3-fatty-acid-supplementation-on-the-composition-of-erythrocyte-membranes-in-athletes-100652027",false,"NCT07768423","The Impact of Omega-3 Fatty Acid Supplementation on the Composition of Erythrocyte Membranes in Athletes","Effects of Omega-3 Fatty Acid Supplementation on Omega-3 Index, Cognitive Function, Hormonal Profile, Speed, and Endurance in Competitive Athletes Aged 16-35 Years: A Randomized Placebo-Controlled Trial","OMEGA-PERFORM","\\*\\*Inclusion Criteria:\\*\\*\n\n* Male competitive soccer players aged 16-35 years.\n* Regular participation in organized soccer training and competition.\n* A minimum of 6 years of systematic soccer training experience.\n* Participation in regular team training during the study period.\n* Habitual mixed diet.\n* Ability and willingness to maintain usual dietary habits and training load throughout the 4-week intervention.\n* Written informed consent provided by the participant.\n* For participants under 18 years of age, written informed consent provided by a parent or legal guardian and assent provided by the participant.\n\n\\*\\*Exclusion Criteria:\\*\\*\n\n* Current use of omega-3 fatty acid supplements or fish-oil products.\n* Use of omega-3 supplements within the 3 months preceding enrollment.\n* Known allergy or hypersensitivity to fish, seafood, fish oil, or any ingredient of the study supplements.\n* Diagnosed cardiovascular, metabolic, endocrine, gastrointestinal, neurological, inflammatory, autoimmune, or hematological disease.\n* Acute infection, injury, or illness that could affect participation in training or study assessments.\n* Use of medications or dietary supplements that could influence lipid metabolism, inflammatory status, hormonal profile, blood coagulation, cognitive function, or physical performance.\n* Regular use of anticoagulant or antiplatelet medication.\n* Significant change in diet, training volume, or supplementation during the study period.\n* Failure to comply with the supplementation protocol or attendance requirements.\n* Participation in another clinical or nutritional intervention study during the study period.",true,"ALL","16 Years","35 Years",{"count":84,"type":85},200,"ESTIMATED","INTERVENTIONAL",[88],"NA","The aim of this study is to evaluate the effects of omega-3 fatty acid supplementation on the Omega-3 Index, erythrocyte membrane composition, cognitive function, hormonal profile, speed, endurance performance, and hematological parameters in competitive athletes aged 16-35 years.",[91,92,93],"Physical Performance","Cognitive Function","Sports Nutrition",[95,96,97,98,99],"Omega-3 fatty acids","Physical performance","Randomized controlled trial","Erythrocyte membrane fatty acids","Sports nutrition","2026-08-14",{"date":102,"type":103},"2026-08-17","ACTUAL",{"date":105,"type":103},"2025-01-07",{"date":107,"type":85},"2028-12-31",{"name":5,"class":6},1]