{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=High-Intensity+Interval+Training+%28HIIT%29",
    "query": {
      "intervention": "High-Intensity Interval Training (HIIT)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 102,
    "total_pages": 11,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=High-Intensity+Interval+Training+%28HIIT%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-17T23:10:47.292Z",
  "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": "NCT06953648",
      "title": "Remotely Monitored, Mobile Health-supported, High Intensity Interval Training Before Hematopoietic Stem Cell Transplant",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hematopoietic Stem Cell Transplantation",
        "Cardiorespiratory Fitness"
      ],
      "interventions": [
        {
          "name": "High Intensity Interval Training",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 126,
      "start_date": "2025-05",
      "completion_date": "2030-03",
      "has_results": false,
      "last_update_posted_date": "2025-05-01",
      "last_synced_at": "2026-09-17T23:10:47.292Z",
      "location_count": 3,
      "location_summary": "Kansas City, Kansas • Durham, North Carolina • Houston, Texas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06953648"
    },
    {
      "nct_id": "NCT05236413",
      "title": "The Effect of a High Fiber Diet and High-Intensity Interval Exercise in Patients With HFpEF",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure With Preserved Ejection Fraction"
      ],
      "interventions": [
        {
          "name": "High Intensity Interval Exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Dietary Approaches to Stop Hypertension (DASH) Diet",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Exercise + DASH Diet",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 36,
      "start_date": "2022-04-01",
      "completion_date": "2025-08-01",
      "has_results": false,
      "last_update_posted_date": "2024-05-07",
      "last_synced_at": "2026-09-17T23:10:47.292Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05236413"
    },
    {
      "nct_id": "NCT03380923",
      "title": "Precision High-Intensity Training Through Epigenetics (PHITE)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Moderate Intensity",
          "type": "BEHAVIORAL"
        },
        {
          "name": "High Intensity",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "27 Years",
        "sex": "ALL",
        "summary": "18 Years to 27 Years"
      },
      "enrollment_count": 239,
      "start_date": "2017-02-23",
      "completion_date": "2021-07-31",
      "has_results": false,
      "last_update_posted_date": "2021-10-07",
      "last_synced_at": "2026-09-17T23:10:47.292Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03380923"
    },
    {
      "nct_id": "NCT04664101",
      "title": "REmotely Monitored, Mobile Health-Supported High Intensity Interval Training After COVID-19 Critical Illness (REMM-HIIT-COVID-19)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Covid19",
        "Critical Illness",
        "High Intensity Interval Training",
        "ICU",
        "Intensive Care Units",
        "Fitness Trackers"
      ],
      "interventions": [
        {
          "name": "REmotely Monitored, Mhealth (REMM) supported High Intensity Interval Training (HIIT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Comparator",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 13,
      "start_date": "2022-03-02",
      "completion_date": "2023-12-01",
      "has_results": false,
      "last_update_posted_date": "2024-01-18",
      "last_synced_at": "2026-09-17T23:10:47.292Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina • Nashville, Tennessee",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04664101"
    },
    {
      "nct_id": "NCT03212300",
      "title": "TSA Exercise Prehabilitation in Older Adults",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postoperative Delirium and Delayed Functional Recovery"
      ],
      "interventions": [
        {
          "name": "Aerobic Exercise Training (AET)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "55 Years to 75 Years"
      },
      "enrollment_count": 3,
      "start_date": "2018-09-28",
      "completion_date": "2020-08-12",
      "has_results": false,
      "last_update_posted_date": "2020-08-14",
      "last_synced_at": "2026-09-17T23:10:47.292Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03212300"
    },
    {
      "nct_id": "NCT04940598",
      "title": "High Intensity Interval Exercise SCI",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Spinal Cord Injuries",
        "Cardiometabolic Diseases"
      ],
      "interventions": [
        {
          "name": "high intensity interval exercise",
          "type": "OTHER"
        },
        {
          "name": "No-exercise control group",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "19 Years to 65 Years"
      },
      "enrollment_count": 8,
      "start_date": "2021-02-01",
      "completion_date": "2023-07-31",
      "has_results": true,
      "last_update_posted_date": "2024-07-24",
      "last_synced_at": "2026-09-17T23:10:47.292Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04940598"
    },
    {
      "nct_id": "NCT03093441",
      "title": "A Comparison of High-intensity Interval Training Protocols on Health and Fitness",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Multimodal High-Intensity Interval Training Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Oakland University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 40 Years · Female only"
      },
      "enrollment_count": 16,
      "start_date": "2017-07-17",
      "completion_date": "2018-08-23",
      "has_results": false,
      "last_update_posted_date": "2019-03-13",
      "last_synced_at": "2026-09-17T23:10:47.292Z",
      "location_count": 1,
      "location_summary": "Rochester, Michigan",
      "locations": [
        {
          "city": "Rochester",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03093441"
    },
    {
      "nct_id": "NCT03545867",
      "title": "Energetic Response to Feeding and Exercise in SCI",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Spinal Cord Injuries"
      ],
      "interventions": [
        {
          "name": "Seated control (CON)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Moderate intensity continuous (MICT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "High intensity interval training (HIIT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Circuit resistance training (CRT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Liquid Meal",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2018-02-28",
      "completion_date": "2018-09-30",
      "has_results": false,
      "last_update_posted_date": "2020-06-19",
      "last_synced_at": "2026-09-17T23:10:47.292Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03545867"
    },
    {
      "nct_id": "NCT05988606",
      "title": "Work Rate Adjustments During a High-intensity Interval Training on a Stationary Bike in a Hot and Temperate Environment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "High-Intensity Interval Training",
        "Heat"
      ],
      "interventions": [
        {
          "name": "15 minutes of high-intensity interval training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "43 minutes of high-intensity interval training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Hot environment",
          "type": "OTHER"
        },
        {
          "name": "Temperate environment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "University of Alabama, Tuscaloosa",
      "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": 7,
      "start_date": "2021-05-12",
      "completion_date": "2021-11-14",
      "has_results": false,
      "last_update_posted_date": "2023-08-14",
      "last_synced_at": "2026-09-17T23:10:47.292Z",
      "location_count": 1,
      "location_summary": "Tuscaloosa, Alabama",
      "locations": [
        {
          "city": "Tuscaloosa",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05988606"
    },
    {
      "nct_id": "NCT02528344",
      "title": "High Intensity Interval Training and Rheumatoid Arthritis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Rheumatoid Arthritis"
      ],
      "interventions": [
        {
          "name": "HIIT",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "60 Years to 80 Years"
      },
      "enrollment_count": 12,
      "start_date": "2015-09",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2016-12-08",
      "last_synced_at": "2026-09-17T23:10:47.292Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02528344"
    }
  ]
}