Cold Water Exposure and Immune Function Study
Public ClinicalTrials.gov record NCT06667479. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Effects of a 4 Week Cold Tub vs Cold Shower Immersion Intervention on Immune Function, Sleep Quality, Mental Health and Well-being, Gut Health, and Muscular Strength in Healthy, Physically Active Adults
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this clinical trial is to explore the effects of a 4 week cold-water immersion (CWI) intervention on measures of immune function, sleep quality, mental health and well-being, and muscular strength. The main questions it aims to answer are: * Does a 4 week CWI intervention improve measures of immune function, sleep quality, mental health and well-being, and muscular strength? * Are there any differences in these measures when comparing cold tubs versus cold showers? Researchers will compare chronic use of cold tubs to cold showers to see if cold water immersion may improve overall immune health and well-being. Participants will: * Undergo 4 weeks of Cold Tub or Cold Shower interventions at a frequency of 3 times a week for 4 minutes, if placed in the CWI intervention groups * Undergo testing measures at the two pre- and post- intervention time points, if placed in the healthy control group or the CWI intervention groups
Study identification
- NCT ID
- NCT06667479
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 37 participants
Conditions and interventions
Interventions
- Cold Water Immersion (CWI) - Cold Tub Immersion (CI) Other
- Cold Water Immersion (CWI) - Cold Shower (CS) Other
- Control Group (CO) Other
Other
Eligibility (public fields only)
- Age range
- 18 Years to 45 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 9, 2024
- Primary completion
- Jan 31, 2026
- Completion
- Feb 28, 2026
- Last update posted
- Mar 9, 2026
2024 – 2026
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Northern Colorado - Gunter Hall | Greeley | Colorado | 80631 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT06667479, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Mar 9, 2026 · Synced Sep 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT06667479 live on ClinicalTrials.gov.