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Influence of Wet Clothing on Thermal Protection

Description

The aim of this investigation is to provide guidance for assessing the influence of wet clothing, and its drying time, on body temperature responses during cold air exposure. Twelve healthy and fit adults (men and women aged 18-49) will complete this study. Four cold air exposures (41°F, 180 min) will be randomly conducted, each while wearing a different clothing ensemble that has been saturated by water. During each cold air exposure, you will be asked to rest for 60 min and perform weighted (38.5lbs) treadmill walking for up to 120 min.

Conditions

Low Body Temperatures
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Related Conditions:

Low Body Temperatures

Study Overview

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Study Details

Study overview

The aim of this investigation is to provide guidance for assessing the influence of wet clothing, and its drying time, on body temperature responses during cold air exposure. Twelve healthy and fit adults (men and women aged 18-49) will complete this study. Four cold air exposures (41°F, 180 min) will be randomly conducted, each while wearing a different clothing ensemble that has been saturated by water. During each cold air exposure, you will be asked to rest for 60 min and perform weighted (38.5lbs) treadmill walking for up to 120 min.

Influence of Wet Clothing on Thermal Protection

Influence of Wet Clothing on Thermal Protection

Condition
Low Body Temperatures
Intervention / Treatment

-

Contacts and Locations

Natick

USARIEM, Natick, Massachusetts, United States, 01760

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

For general information about clinical research, read Learn About Studies.

Eligibility Criteria

  • * Military or civilian, male or female, between the ages of 18 (17 if active duty military) and 49 years.
  • * Able to carry a rucksack weighing 35 kg (77lbs) for at least 20 minutes and able to carry a rucksack weighing 17.5kg (38.5lbs) for up to 120 minutes
  • * In good health as determined by our OMSO (Office of Medical Support and Oversight) General Medical Clearance.
  • * Vaccinated against COVID 19.
  • * Willing to refrain from heavy exercise and alcoholic beverages for 24 hours before each testing session.
  • * Willing to refrain from smoking or tobacco use for 8 hours before each testing session.
  • * Willing to refrain from caffeine ingestion for 12 hours before each testing session.
  • * Body fat percentage \<18% for males, \< 24% for females, once 6 individuals of higher body fat (18% or greater for males, 24% or greater for females) have completed the study.
  • * History of cold injuries.
  • * Raynaud's syndrome.
  • * Cold-induced asthma/bronchospasm.
  • * Medications or dietary supplements that could alter cardiovascular, thermoregulatory, or vascular control.
  • * Heart, lung, kidney, muscle, or nerve disorder(s).
  • * Planned MRI during or within two days after completing the study.
  • * Known allergy to adhesives.
  • * Female and pregnant, planning to become pregnant, or breastfeeding.

Ages Eligible for Study

18 Years to 49 Years

Sexes Eligible for Study

ALL

Accepts Healthy Volunteers

Yes

Collaborators and Investigators

United States Army Research Institute of Environmental Medicine,

Study Record Dates

2023-09-30