[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"respiration\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:respiration":33},{"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":15,"eligibilityCriteria":16,"healthyVolunteers":17,"sex":18,"minAge":19,"maxAge":20,"enrollmentInfo":21,"targetDuration":4,"studyType":24,"phases":25,"briefSummary":27,"conditions":28,"keywords":35,"overallStatus":41,"whyStopped":4,"lastUpdateSubmitDate":42,"lastUpdatePostDateStruct":43,"startDateStruct":46,"completionDateStruct":48,"leadSponsor":50,"locationsCount":5},"100614033","frequency-dependent-effects-of-auricular-vagus-nerve-stimulation-on-autonomic-and-cardiovascular-parameters-100614033",false,"NCT07274332","Frequency-Dependent Effects of Auricular Vagus Nerve Stimulation on Autonomic and Cardiovascular Parameters","Acute Effects of Different Frequencies of Auricular Vagus Nerve Stimulation on HRV, Blood Pressure, and Respiratory Rate: A Sham-Controlled, Randomized, Crossover Dose-Response Study","AVNS-DRC","Inclusion Criteria:\n\n* 18-30 years\n* Healthy (self-reported)\n* No cardiovascular, neurological, metabolic or psychiatric disorders\n* No regular medication affecting autonomic function\n* Non-smoker\n* BMI 18-29.9\n\nExclusion Criteria:\n\n* Pregnancy\n* Cardiac arrhythmia\n* Hypertension or hypotension\n* Chronic respiratory disorders\n* Active infection\n* Metal implants in cervical area\n* Epilepsy\n* Syncope history\n* Prior vagus stimulation experience",true,"ALL","18 Years","30 Years",{"count":22,"type":23},36,"ESTIMATED","INTERVENTIONAL",[26],"NA","This randomized, sham-controlled, crossover study investigates the acute autonomic effects of transcutaneous cervical vagus nerve stimulation (tcVNS) applied at five different frequencies (0 Hz\u002Fsham, 10 Hz, 25 Hz, 50 Hz, 100 Hz) in healthy adults. The primary objective is to determine how stimulation frequency modulates heart rate variability (HRV), blood pressure, and respiratory rate. The study aims to establish a frequency-specific dose-response model using validated physiological measurements.",[29,30,31,32,33,34],"Vagus Nerve Stimulation","Autonomic Nervous System","Heart Rate","Blood Pressure","Respiration","Healthy Volunteers",[36,37,38,39,40],"Transcutaneous Cervical Vagus Nerve Stimulation","Neuromodulation","Non-invasive Vagus Stimulation","Parasympathetic Activation","Heart Rate Variability","NOT_YET_RECRUITING","2025-11-27",{"date":44,"type":45},"2025-12-10","ACTUAL",{"date":47,"type":23},"2025-12-22",{"date":49,"type":23},"2026-03-15",{"name":51,"class":52},"SEFA HAKTAN HATIK","OTHER"]