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NCT05292170 · ClinicalTrials.gov registry record · NA
Influences of Female Sex and Reproductive Hormones on Physiological Aspects of Heat Acclimation
A NA study of Heat Stress, Exertional, sponsored by United States Army Research Institute of Environmental Medicine.
- Completed
- Registry status
- NA
- Development phase
- 27
- Enrollment target
- 1
- Study location
NCT05292170: Completed NA study of Heat Stress, Exertional, sponsored by United States Army Research Institute of Environmental Medicine.
NCT05292170 is a NA study of Heat Stress, Exertional that has completed, run by United States Army Research Institute of Environmental Medicine. The registered enrollment target is 27 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (98% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT05292170, a NA study of Heat Stress, Exertional, has completed, sponsored by United States Army Research Institute of Environmental Medicine.
- COMPLETED
- Registry status
- NA
- Development phase
- 27 participants
- Enrollment target
- 1
- Study location
Study Summary
Women are often understudied in thermal physiology research, leaving recommendations for Soldier safety and performance in hot conditions based largely on data collected in men. Female sex hormones estradiol and progesterone clearly have non-reproductive physiological effects, including influences on thermoregulatory and cardiovascular function. However, mechanisms of differing physiological adaptations to repeated heat exposure (i.e., heat acclimation) as a function of reproductive hormone status have yet to be investigated in a systematic way. Understanding possible sex differences in adaptation or mechanisms for adaptation during heat acclimation is important to ultimately optimize interventions to maximize soldier health and safety during training and deployment in the heat. Our goals in the present study are to evaluate physiological and biophysical responses to a standard heat acclimation protocol in a group of young, healthy men and women. Thirty individuals (n=10 males, n=10 women with a low hormonal status (i.e. early follicular phase), n=10 women with a high hormonal status (i.e. midluteal phase)) will complete 10 consecutive days of exercise (treadmill walking: 3.1 mph/2% grade) in the heat (40°C /40% relative humidity) up to 3hr per day. Changes in core temperature, heart rate, and sex hormones will be assessed to examine differences in thermoregulatory response to heat acclimation.
Conditions Studied
Interventions
- OTHER Heat acclimation
Study Locations (1)
Massachusetts
- U.S. Army Research Institute of Environmental Medicine - Natick
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 27 participants |
| Start Date | 2021-10-01 |
| Est. Completion | 2024-04-30 |
| Phase | NA |
What the finished NCT05292170 record still lists
NCT05292170 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 27 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (98% lower).
The record links to 1 condition, with Heat Stress, Exertional appearing as the primary indexed condition, and to 1 intervention - of which Heat acclimation is the first listed.
NCT05292170 reports a single indexed study location in Massachusetts.
Frequently Asked Questions
What is clinical trial NCT05292170 about?
NCT05292170 is a clinical study titled "Influences of Female Sex and Reproductive Hormones on Physiological Aspects of Heat Acclimation". Women are often understudied in thermal physiology research, leaving recommendations for Soldier safety and performance in hot conditions based largely on data collected in men. Female sex hormones estradiol and progesterone clearly have non-reproductive physiological effects, including influences o...
What is the current status of trial NCT05292170?
This trial is currently completed. It is a NA study. The enrollment target is 27 participants. The study started on 2021-10-01. Estimated completion is 2024-04-30.
What conditions does trial NCT05292170 study?
This clinical trial studies the following conditions: Heat Stress, Exertional.
What interventions are being tested in trial NCT05292170?
The interventions under investigation include: Heat acclimation (OTHER).
Who is sponsoring clinical trial NCT05292170?
This trial is sponsored by United States Army Research Institute of Environmental Medicine, which has 59 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT05292170 being conducted?
This trial has 1 study location across Massachusetts. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT05292170's enrollment target sits among peer trials
27 1708th of 2000 higher than 291 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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