{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Menstrual+Cycle+Phases",
    "query": {
      "intervention": "Menstrual Cycle Phases"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 9,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-16T23:30:51.542Z",
  "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": "NCT01593124",
      "title": "Identification of Novel Biomarkers of Cervicovaginal Mucosal Inflammation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Vaginal Inflammation",
        "Vaginal Infections"
      ],
      "interventions": [
        {
          "name": "Imiquimod",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Nonoxynol-9",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "CONRAD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 45 Years · Female only"
      },
      "enrollment_count": 20,
      "start_date": "2012-05",
      "completion_date": "2013-04",
      "has_results": false,
      "last_update_posted_date": "2015-03-31",
      "last_synced_at": "2026-09-16T23:30:51.542Z",
      "location_count": 1,
      "location_summary": "Norfolk, Virginia",
      "locations": [
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01593124"
    },
    {
      "nct_id": "NCT06985420",
      "title": "The Effect of the Menstrual Cycle on Immune Cell Activity and Recovery After Resistance Exercise",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy Women",
        "Menstruation",
        "Resistance Exercise"
      ],
      "interventions": [
        {
          "name": "Resistance exercise",
          "type": "OTHER"
        },
        {
          "name": "Menstrual Cycle Phases",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Central Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 40 Years · Female only"
      },
      "enrollment_count": 40,
      "start_date": "2024-08-16",
      "completion_date": "2025-05",
      "has_results": false,
      "last_update_posted_date": "2025-05-22",
      "last_synced_at": "2026-09-16T23:30:51.542Z",
      "location_count": 1,
      "location_summary": "Orlando, Florida",
      "locations": [
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06985420"
    },
    {
      "nct_id": "NCT00676026",
      "title": "Impact of GABA-Enhancing Agents on Cortical GABA Concentrations Across the Menstrual Cycle in Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Fluoxetine",
          "type": "DRUG"
        },
        {
          "name": "Zolpidem",
          "type": "DRUG"
        },
        {
          "name": "Progesterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 8,
      "start_date": "2005-05",
      "completion_date": "2009-02",
      "has_results": true,
      "last_update_posted_date": "2017-06-01",
      "last_synced_at": "2026-09-16T23:30:51.542Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00676026"
    },
    {
      "nct_id": "NCT04024826",
      "title": "Effects of Resistance Training on Substrate Metabolism During the Menstrual Cycle",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Menstrual Cycle",
        "Substrate Metabolism"
      ],
      "interventions": [
        {
          "name": "EFP",
          "type": "BEHAVIORAL"
        },
        {
          "name": "LFP",
          "type": "BEHAVIORAL"
        },
        {
          "name": "ELP",
          "type": "BEHAVIORAL"
        },
        {
          "name": "LLP",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Southern Illinois University Edwardsville",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 10,
      "start_date": "2019-07-01",
      "completion_date": "2020-03-16",
      "has_results": false,
      "last_update_posted_date": "2021-10-04",
      "last_synced_at": "2026-09-16T23:30:51.542Z",
      "location_count": 1,
      "location_summary": "Edwardsville, Illinois",
      "locations": [
        {
          "city": "Edwardsville",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04024826"
    },
    {
      "nct_id": "NCT01119976",
      "title": "Association Between the Menstrual Cycle and Weight Loss",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Overweight",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Reduced calorie diet and exercise plan",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Different reduced calorie diet and exercise plan",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Colorado, Denver",
      "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": 20,
      "start_date": "2010-01",
      "completion_date": "2010-08",
      "has_results": false,
      "last_update_posted_date": "2012-12-07",
      "last_synced_at": "2026-09-16T23:30:51.542Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01119976"
    },
    {
      "nct_id": "NCT00671957",
      "title": "Energy Expenditure and Gastric Bypass Surgery Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Morbid Obesity"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Oregon Health and Science University",
      "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": 40,
      "start_date": "2006-02",
      "completion_date": "2019-06",
      "has_results": false,
      "last_update_posted_date": "2019-06-21",
      "last_synced_at": "2026-09-16T23:30:51.542Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00671957"
    },
    {
      "nct_id": "NCT02036879",
      "title": "Gender Disparity and Hormones in Cystic Fibrosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Cystic Fibrosis (CF)"
      ],
      "interventions": [
        {
          "name": "Loestrin (norethindrone acetate and ethinyl estradiol)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 55,
      "start_date": "2014-02",
      "completion_date": "2018-08",
      "has_results": false,
      "last_update_posted_date": "2020-08-31",
      "last_synced_at": "2026-09-16T23:30:51.542Z",
      "location_count": 2,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02036879"
    },
    {
      "nct_id": "NCT04055129",
      "title": "Hormone Induced Effects on Ligament Laxity and Lower Extremity Motor Control",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hormone Influence on Ligament Laxity and Motor Control"
      ],
      "interventions": [
        {
          "name": "No interventions",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of St. Augustine for Health Sciences",
      "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": 52,
      "start_date": "2021-11-17",
      "completion_date": "2023-08-01",
      "has_results": false,
      "last_update_posted_date": "2023-11-28",
      "last_synced_at": "2026-09-16T23:30:51.542Z",
      "location_count": 1,
      "location_summary": "San Marcos, California",
      "locations": [
        {
          "city": "San Marcos",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04055129"
    },
    {
      "nct_id": "NCT04163380",
      "title": "Resistance Training and Sex Hormone Concentrations During the Menstrual Cycle",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Women's Health"
      ],
      "interventions": [
        {
          "name": "Resistance Training",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Southern Illinois University Edwardsville",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 25,
      "start_date": "2019-11-01",
      "completion_date": "2021-12",
      "has_results": false,
      "last_update_posted_date": "2020-02-18",
      "last_synced_at": "2026-09-16T23:30:51.542Z",
      "location_count": 1,
      "location_summary": "Edwardsville, Illinois",
      "locations": [
        {
          "city": "Edwardsville",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04163380"
    }
  ]
}