Heat Acclimation in Females
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexFemale
Age18-55
SponsorTrinity Western University
About this trial
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.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
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
Disqualifiers
Unable to exercise
Previous or current heat intolerance
Pregnant
Trial design
Design model
Parallel
Treatments tested in this trial
Heat exposure
Other interventionParticipants 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
Other interventionParticipants 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
Treatment groups
14 Participants
are divided into 2 treatment groupsGroup A: Heat AcclimationExperimental treatment 1 intervention
Group B: ControlActive comparator 1 intervention
Trial outcomes
Primary outcomes
1
Performance
Participants will complete a timetrial on a cycle ergometer in a heat chamber. Faster times following HA or HAM will be considered a marker of performance
Time frame
2 weeks and 5 weeksSecondary outcomes
1
Intravascular volumes
Expanded plasma volume or increased hemoglobin mass will be considered a positive response to heat acclimation
Time frame
2 weeks and 5 weeksSponsors and contacts
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Source ClinicalTrials.gov