{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Resonant+voice",
    "query": {
      "intervention": "Resonant voice"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 11,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Resonant+voice&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-07T18:32:30.877Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT04275830",
      "title": "The Effects of Heart Rate Variability Biofeedback Training on Hematopoietic Cell Transplantation Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hematopoietic Stem Cell Transplantation",
        "Bone Marrow Transplant",
        "Heart Rate Variability",
        "Autonomic Nervous System",
        "Stress",
        "Mood",
        "Psychological Distress",
        "Emotion Regulation",
        "Communication Research",
        "Narrative"
      ],
      "interventions": [
        {
          "name": "Baseline Surveys",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Heart rate variability biofeedback",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Heart rate variability waitlist and Digital storytelling Control intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Arizona State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 18,
      "start_date": "2020-02-04",
      "completion_date": "2022-02-04",
      "has_results": false,
      "last_update_posted_date": "2022-05-23",
      "last_synced_at": "2026-09-07T18:32:30.877Z",
      "location_count": 1,
      "location_summary": "Scottsdale, Arizona",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04275830"
    },
    {
      "nct_id": "NCT05625191",
      "title": "Patients With and Without Phonotrauma",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Phonotrauma"
      ],
      "interventions": [
        {
          "name": "Acoustic voice analysis",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "High-speed videoendoscopy",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 100,
      "start_date": "2023-01-17",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-11",
      "last_synced_at": "2026-09-07T18:32:30.877Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05625191"
    },
    {
      "nct_id": "NCT03692494",
      "title": "The Effects of Adding Expiratory Muscle Strength Training in Voice Therapy",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dysphonia",
        "Unilateral Vocal Cord Paralysis"
      ],
      "interventions": [
        {
          "name": "Standard of care voice therapy",
          "type": "OTHER"
        },
        {
          "name": "Expiratory muscle strength training (EMST)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2025-04-01",
      "completion_date": "2026-12-01",
      "has_results": false,
      "last_update_posted_date": "2025-02-07",
      "last_synced_at": "2026-09-07T18:32:30.877Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03692494"
    },
    {
      "nct_id": "NCT03235466",
      "title": "A Prospective Trial of Behavioral Therapy for Chronic Cough",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cough"
      ],
      "interventions": [
        {
          "name": "Voice Therapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Voice Therapy and Heart Rate Variability Biofeedback",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Heart Rate Variability Biofeedback",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 45,
      "start_date": "2018-02-01",
      "completion_date": "2021-12-01",
      "has_results": false,
      "last_update_posted_date": "2020-12-04",
      "last_synced_at": "2026-09-07T18:32:30.877Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03235466"
    },
    {
      "nct_id": "NCT01009632",
      "title": "Role of Exercise for Wound Healing in the Larynx",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Acute Phonotrauma"
      ],
      "interventions": [
        {
          "name": "Resonant voice",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Voice rest",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Spontaneous speech",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 9,
      "start_date": "2004-02",
      "completion_date": "2005-03",
      "has_results": false,
      "last_update_posted_date": "2009-11-09",
      "last_synced_at": "2026-09-07T18:32:30.877Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01009632"
    },
    {
      "nct_id": "NCT00222937",
      "title": "Voice Therapy for Teachers With Voice Problems",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Phonotrauma"
      ],
      "interventions": [
        {
          "name": "Lessac-Madsen Resonant Voice Therapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Casper-Based Confidential Flow Therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 105,
      "start_date": "2005-10",
      "completion_date": "2010-08",
      "has_results": false,
      "last_update_posted_date": "2016-01-25",
      "last_synced_at": "2026-09-07T18:32:30.877Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00222937"
    },
    {
      "nct_id": "NCT05220982",
      "title": "Improving Efficacy of Voice Therapy Concepts Via Telepractice and Mobile App Technology",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Voice Disorders"
      ],
      "interventions": [
        {
          "name": "Conversation Training Therapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Global Voice Prevention and Therapy Model",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Modified Conversation Training Therapy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Modified Global Voice Prevention and Therapy Model",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "West Chester University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 32,
      "start_date": "2022-08-31",
      "completion_date": "2025-08-31",
      "has_results": false,
      "last_update_posted_date": "2024-08-28",
      "last_synced_at": "2026-09-07T18:32:30.877Z",
      "location_count": 1,
      "location_summary": "West Chester, Pennsylvania",
      "locations": [
        {
          "city": "West Chester",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05220982"
    },
    {
      "nct_id": "NCT06165536",
      "title": "Laryngeal and Vocal Tract Strategies to Reduce Vocal Fold Contact Pressure",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mid-membranous Vocal Fold Lesion"
      ],
      "interventions": [
        {
          "name": "Resonant voice therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 60,
      "start_date": "2025-12-01",
      "completion_date": "2028-01-31",
      "has_results": false,
      "last_update_posted_date": "2025-12-15",
      "last_synced_at": "2026-09-07T18:32:30.877Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06165536"
    },
    {
      "nct_id": "NCT07176988",
      "title": "Deconstructing Voice Therapy: Towards Enhanced Communication Outcomes",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dysphonia",
        "Primary Muscle Tension Dysphonia (MTD)"
      ],
      "interventions": [
        {
          "name": "Hierarchical method",
          "type": "OTHER"
        },
        {
          "name": "Non Hierarchical method",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "16 Years to 65 Years"
      },
      "enrollment_count": 120,
      "start_date": "2025-09-03",
      "completion_date": "2029-04",
      "has_results": false,
      "last_update_posted_date": "2025-10-20",
      "last_synced_at": "2026-09-07T18:32:30.877Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07176988"
    },
    {
      "nct_id": "NCT06925867",
      "title": "A Frequency-Modulated Music Intervention to Enhance Cognitive Processing Therapy (CPT) for PTSD",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "PTSD - Post Traumatic Stress Disorder"
      ],
      "interventions": [
        {
          "name": "Frequency Filtered Music",
          "type": "OTHER"
        },
        {
          "name": "Unfiltered Music",
          "type": "OTHER"
        },
        {
          "name": "Cognitive Processing Therapy for PTSD",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2025-01-10",
      "completion_date": "2028-02-14",
      "has_results": false,
      "last_update_posted_date": "2026-02-03",
      "last_synced_at": "2026-09-07T18:32:30.877Z",
      "location_count": 2,
      "location_summary": "Columbus, Ohio • Dayton, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Dayton",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06925867"
    }
  ]
}