[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100647777":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":24,"centralContacts":29,"locations":35,"responsibleParty":52,"collaborators":24,"id":56,"slug":57,"hasResults":58,"nctId":59,"briefTitle":60,"officialTitle":61,"acronym":24,"eligibilityCriteria":62,"healthyVolunteers":63,"sex":64,"minAge":65,"maxAge":66,"enrollmentInfo":67,"targetDuration":24,"studyType":70,"phases":71,"briefSummary":73,"conditions":74,"keywords":76,"overallStatus":38,"whyStopped":24,"lastUpdateSubmitDate":80,"lastUpdatePostDateStruct":81,"startDateStruct":84,"completionDateStruct":86,"leadSponsor":88,"locationsCount":89},{"fullName":5,"class":6},"Toros University","OTHER",[8,15],{"label":9,"type":10,"description":11,"interventionNames":12},"BFR NHE-NHE","EXPERIMENTAL","Participants randomized to this sequence will perform conventional Nordic Hamstring Exercise during the first testing session. Following a 7-day washout period, they will perform Nordic Hamstring Exercise with blood flow restriction during the second testing session.",[13,14],"Other: Nordic Hamstring Exercise","Other: Blood Flow Restriction Nordic Hamstring Exercise",{"label":16,"type":10,"description":17,"interventionNames":18},"NHE-BFR NHE","Participants randomized to this sequence will perform Nordic Hamstring Exercise with blood flow restriction during the first testing session. Following a 7-day washout period, they will perform conventional Nordic Hamstring Exercise during the second testing session.",[13,14],[20,25],{"type":6,"name":21,"description":22,"armGroupLabels":23,"otherNames":24},"Nordic Hamstring Exercise","Participants will perform a standardized Nordic Hamstring Exercise protocol under physiotherapist supervision. From a kneeling position with the ankles stabilized, participants will lower the trunk forward in a controlled manner while maintaining alignment of the trunk and hips.",[9,16],null,{"type":6,"name":26,"description":27,"armGroupLabels":28,"otherNames":24},"Blood Flow Restriction Nordic Hamstring Exercise","Participants will perform the same standardized Nordic Hamstring Exercise protocol while individualized blood flow restriction is applied using a pneumatic cuff positioned on the proximal lower extremity.",[9,16],[30],{"name":31,"role":32,"phone":33,"phoneExt":24,"email":34},"İdil Ünlü, Assist. Prof. Dr.","CONTACT","+90 506 515 66 22","idil.unlu@toros.edu.tr",[36],{"facility":37,"status":38,"city":39,"state":24,"zip":24,"country":40,"countryCode":24,"cosmosGeoPoint":41,"geoPoint":46,"contacts":47},"Adana Olympic Preparation Center","RECRUITING","Adana","Turkey (Türkiye)",{"type":42,"coordinates":43},"Point",[44,45],35.32531,36.98615,{"lat":45,"lon":44},[48],{"name":49,"role":32,"phone":50,"phoneExt":24,"email":51},"Burçin Uğur, PHD","+90 507 772 17 72","burcnugur@yahoo.com",{"type":53,"investigatorFullName":54,"investigatorTitle":55,"investigatorAffiliation":5,"oldNameTitle":24,"oldOrganization":24},"PRINCIPAL_INVESTIGATOR","Idil Esin Unlu","Assist. Prof. Dr.","100647777","blood-flow-restriction-during-nordic-hamstring-exercise-in-elite-adolescent-athletes-100647777",false,"NCT07715786","Blood Flow Restriction During Nordic Hamstring Exercise in Elite Adolescent Athletes","Comparison of Hamstring Muscle Oxygenation Responses During Nordic Hamstring Exercise and Blood Flow Restriction Nordic Hamstring Exercise in Elite Adolescent Athletes: A Crossover Experimental Study","Inclusion Criteria:\n\n* Elite adolescent athletes aged 14 to 18 years.\n* Licensed athletes with at least 3 years of regular sports participation.\n* Currently participating in a regular weekly training program.\n* Physically able to complete the Nordic Hamstring Exercise and study testing protocol.\n* Willing to participate in the study.\n* Able to provide written informed consent.\n* For participants younger than 18 years, written informed consent provided by a parent or legal guardian and assent provided by the participant.\n\nExclusion Criteria:\n\n* Hamstring injury within the previous 6 months.\n* Lower extremity surgery within the previous 6 months.\n* Current lower extremity pain or musculoskeletal injury that may interfere with exercise performance.\n* Cardiovascular, vascular, neurological, or other medical conditions that may contraindicate blood flow restriction exercise.\n* Presence of skin lesions or conditions preventing placement of the blood flow restriction cuff or MOXY sensor.\n* Inability to complete either exercise condition or follow the study protocol.",true,"ALL","14 Years","18 Years",{"count":68,"type":69},24,"ESTIMATED","INTERVENTIONAL",[72],"NA","This crossover experimental study aims to compare acute hamstring muscle oxygenation responses during Nordic Hamstring Exercise (NHE) and Blood Flow Restriction Nordic Hamstring Exercise (BFR-NHE) in elite adolescent athletes. Participants will complete both exercise conditions in a randomized order separated by a 7-day washout period. Muscle oxygen saturation will be assessed using near-infrared spectroscopy (MOXY), together with total hemoglobin responses, blood lactate concentration, perceived exertion, and exercise performance variables. The findings may improve understanding of the physiological effects of blood flow restriction during eccentric hamstring exercise in adolescent athletes.",[75],"Healthy Volunteers (HV)",[21,77,78,79],"Blood Flow Restriction","Elite Adolescent Athletes","Muscle Oxygenation","2026-07-13",{"date":82,"type":83},"2026-07-20","ACTUAL",{"date":85,"type":83},"2026-07-01",{"date":87,"type":69},"2027-08",{"name":5,"class":6},1]