Effects of cooling the body before exercise in hot conditions

Effect of Pre-cooling the Body on Whole-body Heat Exchange in Young Males During Exercise in the Heat

Not applicable Interventional University of Ottawa · NCT06670339

This study is testing if cooling the body before exercise in hot weather can help young men perform better and last longer during cycling.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment10 (estimated)
Ages18 Years to 30 Years
SexMale
SponsorUniversity of Ottawa Academic / other
Locations1 site (Ottawa, Ontario)
Trial IDNCT06670339 on ClinicalTrials.gov

What this trial studies

This study investigates how pre-cooling the body, such as through cold-water immersion, affects whole-body heat loss during exercise in hot environments. By lowering the resting core temperature, the study aims to determine if pre-cooling can enhance endurance performance by allowing individuals to exercise at higher intensities for longer periods. The researchers will measure heat exchange during a one-hour moderate-intensity cycling session in heat conditions to understand the mechanisms behind pre-cooling's effects on thermoregulation. The focus is on healthy young males aged 18-30 who meet specific eligibility criteria.

Who should consider this trial

Good fit: Ideal candidates for this study are healthy young males aged 18-30 who are non-smokers and can provide informed consent.

Not a fit: Patients with chronic diseases, acute illnesses, or physical restrictions that limit activity may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could improve exercise performance and safety for individuals exercising in hot conditions.

How similar studies have performed: While there is existing research on the performance benefits of pre-cooling, this study aims to explore a less understood aspect of heat exchange, making it a novel investigation.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Healthy young males (18-30 years)
* Non-smoking
* English or French speaking
* Ability to provide informed consent

Exclusion Criteria:

* Presence of chronic diseases (e.g., hypertension, diabetes)
* Acute illness (e.g., flu, COVID-19)
* Physical restriction limiting physical activity
* Use of medication judged by the patient or investigators to make participation in this study inadvisable.
* Sedentary

Where this trial is running

Ottawa, Ontario

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions ThermoregulationCold ExposureHeat StressExerciseCold StressHeat DissipationPhysical ActivityPerformance
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.