{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=JITAI+physical+activity+message",
    "query": {
      "intervention": "JITAI physical activity message"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-02T10:38:24.419Z",
  "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": "NCT05317832",
      "title": "Using Smartphones to Improve Physical Activity Levels of Individuals With Spinal Cord Injury",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Spinal Cord Injuries"
      ],
      "interventions": [
        {
          "name": "WI program",
          "type": "BEHAVIORAL"
        },
        {
          "name": "WI Program Reminder",
          "type": "BEHAVIORAL"
        },
        {
          "name": "JITAI Goal Setting",
          "type": "BEHAVIORAL"
        },
        {
          "name": "JITAI physical activity message",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Notification EMA",
          "type": "OTHER"
        },
        {
          "name": "End of day EMA",
          "type": "OTHER"
        },
        {
          "name": "Wake up time EMA",
          "type": "OTHER"
        },
        {
          "name": "Weekly PA Information",
          "type": "OTHER"
        },
        {
          "name": "Daily PA Information",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Temple University",
      "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": 196,
      "start_date": "2023-05-25",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-24",
      "last_synced_at": "2026-09-02T10:38:24.419Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05317832"
    },
    {
      "nct_id": "NCT04922216",
      "title": "Adaptive Goals and Interventions for Lifestyle Enhancement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Core",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Standard Diet Monitoring",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Simplified Diet Monitoring",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Adaptive Activity Goals (Daily)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Adaptive Activity Goals (Weekly)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Message Decision Points (Fixed)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Message Decision Points (Adaptive)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Message Decision Rules (Standard)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Message Decision Rules (Adaptive)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Message Choice (No)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Message Choice (Yes)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 759,
      "start_date": "2022-04-28",
      "completion_date": "2024-07-01",
      "has_results": true,
      "last_update_posted_date": "2025-07-20",
      "last_synced_at": "2026-09-02T10:38:24.419Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04922216"
    },
    {
      "nct_id": "NCT07708064",
      "title": "Testing Just-in-Time Adaptive Interventions (JITAIs) to Prevent Goal Disengagement in Response to Weight Regain",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Overweight or Obesity"
      ],
      "interventions": [
        {
          "name": "JITAI Combined with psychological intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Active Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "ORI Community and Evaluation Services",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 120,
      "start_date": "2026-07-14",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-11",
      "last_synced_at": "2026-09-02T10:38:24.419Z",
      "location_count": 1,
      "location_summary": "Springfield, Oregon",
      "locations": [
        {
          "city": "Springfield",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07708064"
    },
    {
      "nct_id": "NCT05751993",
      "title": "Piloting a Reinforcement Learning Tool for Individually Tailoring Just-in-time Adaptive Interventions",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Overweight and Obesity",
        "Overweight",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "ADAPT",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "UNC Lineberger Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 19,
      "start_date": "2025-04-12",
      "completion_date": "2025-08-18",
      "has_results": true,
      "last_update_posted_date": "2026-08-21",
      "last_synced_at": "2026-09-02T10:38:24.419Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05751993"
    },
    {
      "nct_id": "NCT05625061",
      "title": "Just-in-time Adaptive Intervention Messaging in a Digital Weight Loss Intervention for Young Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Overweight",
        "Overweight and Obesity"
      ],
      "interventions": [
        {
          "name": "Core Behavioral Weight Loss (BWL) Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavior Change Technique 1 Message (Action Planning)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavior Change Technique 2 Message (Discrepancy between Current Behavior and Goal)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavior Change Technique 3 Message (Feedback on Outcome of Behavior)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavior Change Technique 4 Message (Social Support)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavior Change Technique 5 Message (Social Comparison)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavior Change Technique 6 Message (Social Reward)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Behavior Change Technique 7 Message (Focus on Past Success)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 255,
      "start_date": "2023-08-25",
      "completion_date": "2025-01-27",
      "has_results": true,
      "last_update_posted_date": "2026-02-17",
      "last_synced_at": "2026-09-02T10:38:24.419Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05625061"
    },
    {
      "nct_id": "NCT03538652",
      "title": "Just-In-Time Adaptive Interventions for Addictive Behaviors",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Addiction"
      ],
      "interventions": [
        {
          "name": "Formative Interviews (not an intervention)",
          "type": "OTHER"
        },
        {
          "name": "Cognitive-behavioral therapy (CBT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Acceptance and commitment therapy (ACT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "No intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "National Institute on Drug Abuse (NIDA)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 9,
      "start_date": "2020-02-19",
      "completion_date": "2020-03-13",
      "has_results": true,
      "last_update_posted_date": "2025-09-09",
      "last_synced_at": "2026-09-02T10:38:24.419Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03538652"
    }
  ]
}