{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Sleep+timing&page=3",
    "query": {
      "intervention": "Sleep timing",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 105,
    "total_pages": 11,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Sleep+timing&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Sleep+timing&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-30T14:16:13.393Z",
  "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": "NCT00817700",
      "title": "Impact of a Sleep Debt in Middle-Aged and Older Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Restriction"
      ],
      "interventions": [
        {
          "name": "Sleep restriction",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 72,
      "start_date": "2005-04",
      "completion_date": "2008-05",
      "has_results": false,
      "last_update_posted_date": "2017-01-11",
      "last_synced_at": "2026-10-30T14:16:13.393Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00817700"
    },
    {
      "nct_id": "NCT06336590",
      "title": "Student Exercise and Sleep Timing Study - Part 2",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep",
        "Mood",
        "Stress"
      ],
      "interventions": [
        {
          "name": "Morning Exercise",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Rutgers, The State University of New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "23 Years",
        "sex": "ALL",
        "summary": "18 Years to 23 Years"
      },
      "enrollment_count": 62,
      "start_date": "2024-10-21",
      "completion_date": "2026-12-16",
      "has_results": false,
      "last_update_posted_date": "2024-11-21",
      "last_synced_at": "2026-10-30T14:16:13.393Z",
      "location_count": 6,
      "location_summary": "New Brunswick, New Jersey • Piscataway, New Jersey",
      "locations": [
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        },
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        },
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        },
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        },
        {
          "city": "Piscataway",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06336590"
    },
    {
      "nct_id": "NCT07444671",
      "title": "Impact of Time-restricted Eating on Sleep, Glucose and Insulin Sensitivity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Time Restricted Eating"
      ],
      "interventions": [
        {
          "name": "Time restricted eating",
          "type": "OTHER"
        },
        {
          "name": "Control eating",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Colorado State University",
      "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": 13,
      "start_date": "2018-12-07",
      "completion_date": "2021-05-25",
      "has_results": false,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-10-30T14:16:13.393Z",
      "location_count": 1,
      "location_summary": "Fort Collins, Colorado",
      "locations": [
        {
          "city": "Fort Collins",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07444671"
    },
    {
      "nct_id": "NCT04753190",
      "title": "Light Timing Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronobiology",
        "Light",
        "Sleep",
        "Circadian Rhythm",
        "Adolescence"
      ],
      "interventions": [
        {
          "name": "Baseline Sleep Satiation and Phase Stabilization",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Gradually Shifted Sleep",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Rush University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "18 Years to 20 Years"
      },
      "enrollment_count": 84,
      "start_date": "2022-08-22",
      "completion_date": "2025-05-18",
      "has_results": false,
      "last_update_posted_date": "2026-09-15",
      "last_synced_at": "2026-10-30T14:16:13.393Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04753190"
    },
    {
      "nct_id": "NCT01047930",
      "title": "The Effect of Exercise on Acute Nicotine Withdrawal",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nicotine Dependence",
        "Smoking",
        "Sleep Disorders, Intrinsic"
      ],
      "interventions": [
        {
          "name": "Exercise",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pittsburgh",
      "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": 88,
      "start_date": "2010-01",
      "completion_date": "2013-07",
      "has_results": false,
      "last_update_posted_date": "2014-12-02",
      "last_synced_at": "2026-10-30T14:16:13.393Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01047930"
    },
    {
      "nct_id": "NCT05381532",
      "title": "Menstrual-phase-dependent Differences in Response to Sleep Loss",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Deprivation"
      ],
      "interventions": [
        {
          "name": "Controlled sleep",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 35 Years · Female only"
      },
      "enrollment_count": 29,
      "start_date": "2022-10-17",
      "completion_date": "2026-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-07-02",
      "last_synced_at": "2026-10-30T14:16:13.393Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05381532"
    },
    {
      "nct_id": "NCT03525717",
      "title": "Effect of Late Dinner on Nocturnal Metabolism",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Routine Dinner",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Late dinner",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "18 Years to 30 Years"
      },
      "enrollment_count": 34,
      "start_date": "2018-05-08",
      "completion_date": "2020-01-01",
      "has_results": false,
      "last_update_posted_date": "2020-12-02",
      "last_synced_at": "2026-10-30T14:16:13.393Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03525717"
    },
    {
      "nct_id": "NCT04893226",
      "title": "Circadian Rhythms in Postmenopausal Women",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metabolic Syndrome",
        "Postmenopausal Symptoms"
      ],
      "interventions": [
        {
          "name": "Time-Restricted Feeding (TRF)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Julie Pendergast",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "45 Years to 65 Years · Female only"
      },
      "enrollment_count": 164,
      "start_date": "2021-10-19",
      "completion_date": "2027-01-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-10",
      "last_synced_at": "2026-10-30T14:16:13.393Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04893226"
    },
    {
      "nct_id": "NCT02291952",
      "title": "Development of Countermeasures Against Adverse Metabolic Effects of Shift Work",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Circadian Dysregulation"
      ],
      "interventions": [
        {
          "name": "Meal schedule",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "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": 20,
      "start_date": "2015-03-19",
      "completion_date": "2018-08-29",
      "has_results": false,
      "last_update_posted_date": "2020-03-19",
      "last_synced_at": "2026-10-30T14:16:13.393Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02291952"
    },
    {
      "nct_id": "NCT02457832",
      "title": "Motor Training in PD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "Adapted Tango Dancing",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavioral Control (BC) Condition",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "40 Years to 70 Years"
      },
      "enrollment_count": 87,
      "start_date": "2015-06-01",
      "completion_date": "2023-12-31",
      "has_results": true,
      "last_update_posted_date": "2025-10-15",
      "last_synced_at": "2026-10-30T14:16:13.393Z",
      "location_count": 1,
      "location_summary": "Decatur, Georgia",
      "locations": [
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02457832"
    }
  ]
}