{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Two-day+cardiopulmonary+exercise+test",
    "query": {
      "intervention": "Two-day cardiopulmonary exercise test"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T13:11:41.074Z",
  "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": "NCT01636570",
      "title": "Vitamin D3 Supplementation for Heart Failure Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Heart Failure",
        "Vitamin D Deficiency",
        "Cardiomyopathy",
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Placebo Comparator: Sugar Pill",
          "type": "DRUG"
        },
        {
          "name": "Vitamin D3 (cholecalciferol)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Heidi Moretti, MS, RD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 40,
      "start_date": "2012-08",
      "completion_date": "2015-04",
      "has_results": false,
      "last_update_posted_date": "2017-04-26",
      "last_synced_at": "2026-09-25T13:11:41.074Z",
      "location_count": 2,
      "location_summary": "Missoula, Montana",
      "locations": [
        {
          "city": "Missoula",
          "state": "Montana"
        },
        {
          "city": "Missoula",
          "state": "Montana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01636570"
    },
    {
      "nct_id": "NCT03800342",
      "title": "Recovery, Fatigability, and Proteomic Response to Aerobic Exercise Training in Healthy Individuals",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Adult",
        "Fatigue"
      ],
      "interventions": [
        {
          "name": "Aerobic Exercise Training",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "George Mason University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 21,
      "start_date": "2019-01-22",
      "completion_date": "2019-04-24",
      "has_results": false,
      "last_update_posted_date": "2019-05-16",
      "last_synced_at": "2026-09-25T13:11:41.074Z",
      "location_count": 1,
      "location_summary": "Fairfax, Virginia",
      "locations": [
        {
          "city": "Fairfax",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03800342"
    },
    {
      "nct_id": "NCT04026425",
      "title": "Analysis of Post-exertional Malaise Using a Two-day CPET in People With ME/CFS",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myalgic Encephalomyelitis",
        "Chronic Fatigue Syndrome"
      ],
      "interventions": [
        {
          "name": "Two-day cardiopulmonary exercise test",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ithaca College",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 173,
      "start_date": "2018-08-01",
      "completion_date": "2023-03-31",
      "has_results": false,
      "last_update_posted_date": "2023-07-07",
      "last_synced_at": "2026-09-25T13:11:41.074Z",
      "location_count": 3,
      "location_summary": "Torrance, California • Ithaca, New York • New York, New York",
      "locations": [
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Ithaca",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04026425"
    },
    {
      "nct_id": "NCT02844400",
      "title": "Cancer Patients' Performance Status Assessed Using Cardiopulmonary Exercise Testing and Wearable Data Generation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Malignant Solid Tumor",
        "Hematologic Malignancies"
      ],
      "interventions": [
        {
          "name": "Biometric Devices",
          "type": "DEVICE"
        },
        {
          "name": "Physical Performance Testing",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "UNC Lineberger Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 67,
      "start_date": "2016-11",
      "completion_date": "2018-12",
      "has_results": false,
      "last_update_posted_date": "2019-02-22",
      "last_synced_at": "2026-09-25T13:11:41.074Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02844400"
    },
    {
      "nct_id": "NCT07474090",
      "title": "Personalized Exercise Program for Survivors of Breast Cancer, STEPS-BC Trial",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anatomic Stage I Breast Cancer AJCC v8",
        "Anatomic Stage II Breast Cancer AJCC v8",
        "Anatomic Stage III Breast Cancer AJCC v8",
        "Breast Carcinoma",
        "Breast Inflammatory Carcinoma",
        "Locally Recurrent Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Exercise Intervention",
          "type": "OTHER"
        },
        {
          "name": "Educational Intervention",
          "type": "OTHER"
        },
        {
          "name": "Supportive Care",
          "type": "OTHER"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Accelerometry",
          "type": "PROCEDURE"
        },
        {
          "name": "Electronic Health Record Review",
          "type": "OTHER"
        },
        {
          "name": "Cardiopulmonary Exercise Testing",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 120,
      "start_date": "2026-05-27",
      "completion_date": "2030-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-15",
      "last_synced_at": "2026-09-25T13:11:41.074Z",
      "location_count": 2,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07474090"
    }
  ]
}