Recruiting

Heat Acclimation

Sponsor:

Trinity Western University

Code:

NCT06551168

Conditions

Heat Exposure

Blood Volume

Cardiac Output

Eligibility Criteria

Sex: Female

Age: 18 - 55

Healthy Volunteers: Accepted

Interventions

Heat exposure

Control group

Study Details

Brief summary:

Heat acclimation is when you repeatedly exposure yourself to heat so that your body adapts and better tolerates heat.

This project will determine if completing a heat acclimation maintenance period after heat acclimation is more beneficial than heat acclimating alone for exercise performance in the heat. To determine this, participants will exercise in the heat before heat acclimation, after heat acclimation, and after heat acclimation maintenance. Researchers will assess the heart's pumping capacity, blood volume, body temperature, and exercise performance to determine which approach is more effective.

Conditions

Heat Exposure

Blood Volume

Cardiac Output

Study ID

NCT06551168

Start date

Sep 1, 2024

Status verified date

Apr, 2025

Completion date

Apr 24, 2026

Anticipated

Primary completion date

Apr 24, 2026

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: Female

Age: 18 - 55

Healthy Volunteers: Accepted

Inclusion Criteria:

  • Familiar with the sport of cycling and own a bicycle and smart trainer (or a trainer and a power meter).
  • Endurance athlete or currently engaging in endurance exercise
  • Maximal oxygen consumption (VO2max) greater than 40 ml/kg/min
  • Between the ages of 18 and 55
  • Able to speak, read, and write in English

Exclusion Criteria:

  • Unable to exercise
  • Previous or current heat intolerance
  • Pregnant

Study Design

Enrollment

14 participants

Anticipated

Allocation

Non randomized

Intervention Model

Parallel Assignment

Primary purpose

Basic Science

Interventions and Outcome Measures

Arms

experimental: Heat Acclimation

Participants in this arm will undergo heat acclimation sessions

active comparator: Control

Participants in this arm will undergo heart rate matched training volume

Interventions

Heat exposure

Participants will exercise at home while wearing a clothing ensemble over 19 one hour sessions. They will use validated perceptual scales to guide their effort and thermal sensation.

Control group

Participants will exercise at home over 19 one hour sessions. They will use heart rate to guide their effort. The exercise will take place in cool conditions

Primary outcome measure

  • Performance [ Time Frame: 2 weeks and 5 weeks ]

Central Contacts and Locations

Central contacts

Anita T Coté, PhD

604.513.2121anita.cote@twu.ca

Normand A Richard, MSc

604.513.2121nar11@sfu.ca

Locations

Trinity Western Unversity

Recruiting

Langley, British Columbia, Canada, V2Y 1Y1

Contacts

Anita T Cote, PhD

1 604-513-2121acote@twu.ca

More Information

Sponsor

Trinity Western University

Last update posted

Apr 10, 2025

Last verified

Apr, 2025

Keywords

  • basic science

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by Trinity Western University on 2025-04-10.