{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Contraction&page=4",
    "query": {
      "intervention": "Contraction",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 378,
    "total_pages": 38,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Contraction&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Contraction&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-30T00:41:45.466Z",
  "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": "NCT00953953",
      "title": "Study of Left Ventricular Dyssynchrony in Heart Failure Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Phillips ultrasound system",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Albert Einstein Healthcare Network",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2007-01",
      "completion_date": "2011-10",
      "has_results": false,
      "last_update_posted_date": "2012-01-26",
      "last_synced_at": "2026-10-30T00:41:45.466Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00953953"
    },
    {
      "nct_id": "NCT07541092",
      "title": "The Comparative Advantage of the Optrell Mapping Catheter in Ventricular Arrhythmias From the Papillary Muscles",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Ventricular Arrythmia"
      ],
      "interventions": [
        {
          "name": "Ablation using Optrell™ mapping catheter",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Northwell Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 20,
      "start_date": "2024-12-30",
      "completion_date": "2028-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-21",
      "last_synced_at": "2026-10-30T00:41:45.466Z",
      "location_count": 1,
      "location_summary": "New Hyde Park, New York",
      "locations": [
        {
          "city": "New Hyde Park",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07541092"
    },
    {
      "nct_id": "NCT02027623",
      "title": "Spinal Control During Functional Activities to Improve Low Back Pain Outcomes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mechanical Low Back Pain",
        "Chronic Low Back Pain"
      ],
      "interventions": [
        {
          "name": "Motor skill training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Strength and flexibility exercise",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 154,
      "start_date": "2014-01-15",
      "completion_date": "2017-11",
      "has_results": true,
      "last_update_posted_date": "2020-08-21",
      "last_synced_at": "2026-10-30T00:41:45.466Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02027623"
    },
    {
      "nct_id": "NCT03972683",
      "title": "Role of Acetylcholine in Blood Flow Regulation in Healthy Adults: Effects of Age and Exercise Training",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Vasoconstriction",
        "Vasodilation"
      ],
      "interventions": [
        {
          "name": "Handgrip Exercise Training",
          "type": "OTHER"
        },
        {
          "name": "Acetylcholine",
          "type": "DRUG"
        },
        {
          "name": "Adenosine Triphosphate",
          "type": "DRUG"
        },
        {
          "name": "Atropine",
          "type": "DRUG"
        },
        {
          "name": "Phenylephrine",
          "type": "DRUG"
        },
        {
          "name": "Sodium Nitroprusside",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Colorado State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 0,
      "start_date": "2019-04-16",
      "completion_date": "2021-07-31",
      "has_results": false,
      "last_update_posted_date": "2021-08-02",
      "last_synced_at": "2026-10-30T00:41:45.466Z",
      "location_count": 1,
      "location_summary": "Fort Collins, Colorado",
      "locations": [
        {
          "city": "Fort Collins",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03972683"
    },
    {
      "nct_id": "NCT05289869",
      "title": "A Pilot Study: High Versus Low Oxytocin Dosing for Induction of Labor in Pregnant Patients With Obesity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Pregnant Patients With Obesity"
      ],
      "interventions": [
        {
          "name": "High-dose oxytocin",
          "type": "DRUG"
        },
        {
          "name": "Low-dose oxytocin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 20,
      "start_date": "2022-04-06",
      "completion_date": "2022-10-28",
      "has_results": true,
      "last_update_posted_date": "2023-11-29",
      "last_synced_at": "2026-10-30T00:41:45.466Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05289869"
    },
    {
      "nct_id": "NCT06060548",
      "title": "Role of Novel ILR in the Management of PVCs",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "PVC - Premature Ventricular Contraction",
        "Myocarditis"
      ],
      "interventions": [
        {
          "name": "Monitoring of patients presenting with PVCs",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Kansas City Heart Rhythm Research Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2022-04-20",
      "completion_date": "2025-12",
      "has_results": false,
      "last_update_posted_date": "2025-08-28",
      "last_synced_at": "2026-10-30T00:41:45.466Z",
      "location_count": 6,
      "location_summary": "Overland Park, Kansas • Independence, Missouri • Kansas City, Missouri",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Independence",
          "state": "Missouri"
        },
        {
          "city": "Independence",
          "state": "Missouri"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06060548"
    },
    {
      "nct_id": "NCT03691740",
      "title": "Uterine Contractions Under Blue Light",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Preterm Contractions"
      ],
      "interventions": [
        {
          "name": "Ocular light",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of South Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 55 Years · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2018-09-06",
      "completion_date": "2019-06",
      "has_results": false,
      "last_update_posted_date": "2018-10-02",
      "last_synced_at": "2026-10-30T00:41:45.466Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03691740"
    },
    {
      "nct_id": "NCT05926219",
      "title": "C-Protein in Fatigue and Aging",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Aging",
        "Muscle Atrophy or Weakness",
        "Sarcopenia in Elderly",
        "Sarcopenia"
      ],
      "interventions": [
        {
          "name": "Fatiguing Exercise",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Oregon",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 24,
      "start_date": "2017-11-06",
      "completion_date": "2027-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-09",
      "last_synced_at": "2026-10-30T00:41:45.466Z",
      "location_count": 1,
      "location_summary": "Eugene, Oregon",
      "locations": [
        {
          "city": "Eugene",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05926219"
    },
    {
      "nct_id": "NCT03502187",
      "title": "Subacute Low Back Pain in Active Duty",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Subacute Low Back Pain"
      ],
      "interventions": [
        {
          "name": "Progressive Exercise Plan",
          "type": "BEHAVIORAL"
        },
        {
          "name": "NeuromuscularElectricalStimulation(NMES)",
          "type": "DEVICE"
        },
        {
          "name": "Primary Care Management (PCM)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DEVICE"
      ],
      "sponsor": "University of Tennessee",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 133,
      "start_date": "2018-04-17",
      "completion_date": "2020-05-28",
      "has_results": true,
      "last_update_posted_date": "2022-01-25",
      "last_synced_at": "2026-10-30T00:41:45.466Z",
      "location_count": 1,
      "location_summary": "Fort Campbell North, Kentucky",
      "locations": [
        {
          "city": "Fort Campbell North",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03502187"
    },
    {
      "nct_id": "NCT03579147",
      "title": "Non-invasive Buttock Lifting Induced by Magnetic Device - Multicentric Study",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Muscle Tightness"
      ],
      "interventions": [
        {
          "name": "Treatment with BTL EMSCULPT device",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "BTL Industries Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "22 Years and older · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2017-12-15",
      "completion_date": "2019-09-30",
      "has_results": false,
      "last_update_posted_date": "2020-05-26",
      "last_synced_at": "2026-10-30T00:41:45.466Z",
      "location_count": 6,
      "location_summary": "Gilbert, Arizona • Beverly Hills, California • Miami, Florida + 2 more",
      "locations": [
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03579147"
    }
  ]
}