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Cold Temperature and Exercise Study

This research study is looking at how cold temperatures affect the body's ability to burn fat during exercise, and if there are differences between women and men. We know that women tend to burn more fat during exercise than men, and that being in the cold can increase fat burning during exercise. This study wants to find out if the amount of extra fat burned in the cold is different for women compared to men. You might be able to join if you are between 18 and 40 years old, your weight has been stable, and you can understand English. The main goal is to measure how much fat your body burns during exercise while in the lab. The study is currently unclear on its recruitment status and plans to enroll 20 participants.

Study design
This is an interventional study that will include 20 participants. It compares exercise in a cold room (5 degrees Celsius) to exercise at room temperature.
What's involved
You will need to avoid caffeine and alcohol for 24 hours before two different study visits. The study will measure your maximal fat oxidation during exercise while in the lab.
Compensation
Not stated in the trial record.
Follow-up
Not specified.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT07297823

Sex Differences in Cold-Induced Changes in Maximal Fat Oxidation

Recruiting
NAAges 18–40Interventional
Colorado State University
~20 participants
Updated 2026-05-15 on ClinicalTrials.gov
What's tested:Cold temperatureRoom Temperature

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Maximal Fat Oxidation
Measured over During exercise while in the lab

Conditions

Exercise

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Healthy Volunteers

NCT07297823

Where you'd take part

This study runs at 1 site. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • Colorado State University

    Fort Collins, Coloradostudy coordinator listed

    Recruiting

Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.

Study leadership

  • Christopher Bell · PRINCIPAL_INVESTIGATOR · Colorado State University

Who to contact

Christopher Bell
[email protected]
9704917522
Email the study team

Opens a ready-to-send draft in your own email app — review before sending.

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Eligibility criteria

Inclusion

Age 18-40 years (inclusive)
Weight stable (no change in body mass greater than 5 lbs. within the previous 6 months.
Willing to abstain from caffeine and alcohol for 24-hours prior to two different study visits
Competency in English as informally assessed by comprehension of the Informed Consent. This study involves maximal exercise testing; for safety reasons, the ability for clear and rapid communication will be necessary between the research participants and the investigators.
Regular exercise (i.e., at least 150 minutes of moderate-vigorous exercise per week)

Exclusion

Use of hormonal contraceptives
History of autonomic, cardio-pulmonary, and/or metabolic disease (including heart failure, hypertension, arrhythmia, vascular disease, and/or diabetes)
Pregnancy or breast feeding
Habitual use of tobacco/nicotine products or recreational drugs (2 or more uses within the previous month)

What this trial measures

  • Maximal Fat OxidationDuring exercise while in the lab

    Using indirect calorimetry, fat oxidation will be determined. The maximal value for fat oxidation will be recorded.