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Official title Cold Water and Decision-Making
ClinicalTrials.gov ID: NCT06908447
What this study is testing
- What it's testing
- The behavioral within-subject cross-over design study "CoVa" aims to investigate the effect of a short-term full-body cold-water immersion vs. warm-water immersion control on value-based choice, psychological well-being, and peripheral physiology.
- Which group you join is decided by chance.
A plain-language read of the study's public ClinicalTrials.gov listing. The study team confirms the details.
Who can take part
Ages 18 to 40. Healthy volunteers may be eligible.
You may be able to join if
- 18-40 years of age
- Consent to participate
- Fluency in German
- Physically and mentally healthy
- BMI 18-30 kg/m2
You likely can't join if
- Raynaud syndrome
- Cold urticaria
- High resting heart rate (\>160 beats per minute)
- Acute infection
- Diagnosed current or former illnesses of
- Brain and mind
See the full eligibility criteria
- 18-40 years of age
- Consent to participate
- Fluency in German
- Physically and mentally healthy
- BMI 18-30 kg/m2
- Normal day-night rhythm
- Raynaud syndrome
- Cold urticaria
- High resting heart rate (\>160 beats per minute)
- Acute infection
- Diagnosed current or former illnesses of
- Brain and mind
- Heart and blood circulation
- Gastrointestinal system
- Endocrine system
- Other serious past or present medical conditions
- Wearing of medical devices (e.g., pacemaker)
- Fear of blood, needles, or phlebotomy
- Allergies to plasters, gels, and other medical equipment
- Allergies to commercially available liquid meals (e.g., shakes, yfood Labs GmbH)
- Recurrent intake of medication which affect metabolism
- Regular nicotine consumption (e.g., vaping, cigarettes)
- Excessive alcohol consumption (\>14 servings/week)
- Recent illegal drug consumption (within 2 weeks prior)
- Strong mental or physical stress
- Excessive exercise (\>2 h high-intensity exercise/day)
- Pregnancy or breastfeeding
- Inability to wear skin-exposing swimwear, e.g., for religious reasons
- Affinity for winter swimming, cryotherapy, breathwork (\>3 times/year)
The study team makes the final eligibility decision.
Where it's taking place
- Nuthetal, Germany
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part - confirm specifics with the study team.
How long does this study last?
The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.
Who can join this trial?
This study is enrolling all sexes, 18 years to 40 years. Healthy volunteers may be eligible. The study team makes the final eligibility decision.
Where is this trial taking place?
Study sites include Nuthetal, Germany. Enter your location above to see the nearest site and check your eligibility.
Explore other conditions
BridgeMD is an information and trial-matching tool - not medical advice, and not the study sponsor. Details come from ClinicalTrials.gov; the study team decides eligibility.