{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Muscle+Tightness",
    "query": {
      "condition": "Muscle Tightness"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 54,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Muscle+Tightness&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T08:09:03.371Z",
  "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": "NCT05793242",
      "title": "Immediate and 24-hour Effects of HyperVolt, Body Tempering, and Cupping Compared to Stretching on Hamstring Flexibility",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hamstring Contractures",
        "Muscle Tightness"
      ],
      "interventions": [
        {
          "name": "Hypervolt",
          "type": "DEVICE"
        },
        {
          "name": "Body Tempering",
          "type": "DEVICE"
        },
        {
          "name": "Dry cupping",
          "type": "DEVICE"
        },
        {
          "name": "Static stretching",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 80,
      "start_date": "2023-04-03",
      "completion_date": "2023-11",
      "has_results": false,
      "last_update_posted_date": "2023-04-26",
      "last_synced_at": "2026-05-22T08:09:03.371Z",
      "location_count": 1,
      "location_summary": "Columbia, South Carolina",
      "locations": [
        {
          "city": "Columbia",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05793242"
    },
    {
      "nct_id": "NCT03044106",
      "title": "Cranial Laser Reflex Technique for Hamstring Function",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hamstring Injury",
        "Muscle Tone Increased",
        "Muscle Pain",
        "Muscle Weakness"
      ],
      "interventions": [
        {
          "name": "CLRT",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 44,
      "start_date": "2017-03-04",
      "completion_date": "2017-07-31",
      "has_results": true,
      "last_update_posted_date": "2019-02-12",
      "last_synced_at": "2026-05-22T08:09:03.371Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03044106"
    },
    {
      "nct_id": "NCT00776048",
      "title": "Validation of an Obstacle Course Used in Patients With Muscle Tightness",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Stroke",
        "Traumatic Brain Injury",
        "Multiple Sclerosis",
        "Spasticity",
        "Healthy Controls"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Kessler Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2007-01",
      "completion_date": "2009-12",
      "has_results": false,
      "last_update_posted_date": "2010-06-24",
      "last_synced_at": "2026-05-22T08:09:03.371Z",
      "location_count": 1,
      "location_summary": "West Orange, New Jersey",
      "locations": [
        {
          "city": "West Orange",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00776048"
    },
    {
      "nct_id": "NCT05256771",
      "title": "Electrical Muscle Stimulation with 1064 Nm Diode Laser and RF/PEMF for Non-invasive Body Contouring and Fat Reduction.",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fat Reduction",
        "Muscle Tone Increased"
      ],
      "interventions": [
        {
          "name": "EMS",
          "type": "DEVICE"
        },
        {
          "name": "1064 nm diode laser",
          "type": "DEVICE"
        },
        {
          "name": "RF/PEMF",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Venus Concept",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 36,
      "start_date": "2021-11-01",
      "completion_date": "2025-09-30",
      "has_results": false,
      "last_update_posted_date": "2025-03-28",
      "last_synced_at": "2026-05-22T08:09:03.371Z",
      "location_count": 3,
      "location_summary": "San Diego, California • Hackensack, New Jersey • Nashville, Tennessee",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Hackensack",
          "state": "New Jersey"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05256771"
    },
    {
      "nct_id": "NCT04596228",
      "title": "Non-invasive Lipolysis and Improvement of Muscle Tone in Inner Thighs",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fat Disorder"
      ],
      "interventions": [
        {
          "name": "BTL-899",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "BTL Industries Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2020-10-15",
      "completion_date": "2021-07-06",
      "has_results": false,
      "last_update_posted_date": "2021-11-04",
      "last_synced_at": "2026-05-22T08:09:03.371Z",
      "location_count": 1,
      "location_summary": "Fort Collins, Colorado",
      "locations": [
        {
          "city": "Fort Collins",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04596228"
    },
    {
      "nct_id": "NCT03758690",
      "title": "High-Intensity Focused Electromagnetic (HIFEM) Field Device in Women After Childbirth",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Muscle Tone Increased"
      ],
      "interventions": [
        {
          "name": "High-Intensity Focused Electromagnetic (HIFEM) Field Device",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "BTL Industries Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "21 Years and older · Female only"
      },
      "enrollment_count": 10,
      "start_date": "2018-10-25",
      "completion_date": "2020-01-02",
      "has_results": false,
      "last_update_posted_date": "2020-05-27",
      "last_synced_at": "2026-05-22T08:09:03.371Z",
      "location_count": 2,
      "location_summary": "Macon, Georgia • Chicago, Illinois",
      "locations": [
        {
          "city": "Macon",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03758690"
    },
    {
      "nct_id": "NCT00001922",
      "title": "Sensory Function in Idiopathic Voice Disorders",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Phonation Disorder",
        "Spastic Dysphonia",
        "Voice Disorder"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Neurological Disorders and Stroke (NINDS)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "20 Years to 80 Years"
      },
      "enrollment_count": 370,
      "start_date": "1998-11-05",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2017-07-02",
      "last_synced_at": "2026-05-22T08:09:03.371Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001922"
    },
    {
      "nct_id": "NCT00403936",
      "title": "Effects of OA Decompression on the Autonomic Nervous System",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Muscle Tension"
      ],
      "interventions": [
        {
          "name": "OA decompression manipulation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Nova Southeastern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2005-04",
      "completion_date": "2005-05",
      "has_results": false,
      "last_update_posted_date": "2010-02-25",
      "last_synced_at": "2026-05-22T08:09:03.371Z",
      "location_count": 1,
      "location_summary": "Fort Lauderdale, Florida",
      "locations": [
        {
          "city": "Fort Lauderdale",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00403936"
    },
    {
      "nct_id": "NCT04587804",
      "title": "Abdomen - Fat Reduction and Muscle Toning",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fat Burn"
      ],
      "interventions": [
        {
          "name": "rPMS+RF",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "BTL Industries Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 41,
      "start_date": "2019-06-17",
      "completion_date": "2021-03-15",
      "has_results": false,
      "last_update_posted_date": "2021-04-01",
      "last_synced_at": "2026-05-22T08:09:03.371Z",
      "location_count": 2,
      "location_summary": "Macon, Georgia • Chicago, Illinois",
      "locations": [
        {
          "city": "Macon",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04587804"
    },
    {
      "nct_id": "NCT05970562",
      "title": "Project 4: Ambulatory Biofeedback and Voice Therapy for Patients With Vocal Hyperfunction",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Voice Disorders",
        "Vocal Fold Polyp",
        "Vocal Nodules in Adults",
        "Muscle Tension Dysphonia"
      ],
      "interventions": [
        {
          "name": "Ambulatory Voice Monitoring with Biofeedback (AVM-B)",
          "type": "DEVICE"
        },
        {
          "name": "Conversation Training Therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BEHAVIORAL"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 100,
      "start_date": "2024-03-01",
      "completion_date": "2029-04-01",
      "has_results": false,
      "last_update_posted_date": "2025-05-11",
      "last_synced_at": "2026-05-22T08:09:03.371Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05970562"
    }
  ]
}