Heat Waves and the Elderly - Cooling Modalities

Part of paid clinical trials in Dallas, Texas.

Sponsor
University of Texas Southwestern Medical Center
Study ID
NCT05484739
Status
Recruiting
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Conditions

  • Aging
  • Hyperthermia

Eligibility Criteria

Sex
ALL
Age
65 Years - N/A
Healthy Volunteers
Accepted

Interventions

  • Water Spray — OTHER
    Participants will receive water spraying on their body throughout the climate chamber exposure.
  • Fan — OTHER
    Participants will be exposed to a fan throughout the climate chamber exposure.
  • Water Spray and Fan — OTHER
    Participants will receive both water spraying and a fan throughout the climate chamber exposure.
  • Control — OTHER
    Participants will NOT receive either water spray or a fan exposure.

Study Details

The purpose of this study is to assess how well cooling modalities work in reducing cardiovascular stress of the elderly to heat wave conditions

Key Dates

Start date
Feb 21, 2023
Status verified
Oct 2025
Primary completion
Aug 31, 2026
Completion
Aug 31, 2026

Study Design

Enrollment
100 participants (estimated)
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION

Arms

  • Experimental: Very hot and dry
    Subjects will be exposed to 3 hours in a climate chamber set to approximately 47 deg C and 15% relative humidity, which reflects a very hot and dry heat wave condition similar to the 2018 Los Angeles heat wave. Four visits will be required to complete this arm, with each visit a different cooling modality applied.
  • Experimental: Hot and humid
    Subjects will be exposed to 3 hours in a climate chamber set to approximately 41 deg C and 40% relative humidity, which reflects hot and humid heat wave similar to the 1995 Chicago heat wave. Four visits will be required to complete this arm, with each visit a different cooling modality applied.

Primary Outcome Measure

Change in core body temperature [ Time Frame: Body core temperature will be obtained within 60 min before the heat wave exposure after the 3 hour heat wave exposure. ]

Central Contacts

Locations (1)

FacilityCityStateZIPSite coordinators
Texas Health Presbyterian Hospital DallasDallasTexas75231
Zachary McKenna, PhD
[email protected]
214-345-6557
Taysom Wallace, MS
[email protected]
214.345.5022
Craig Crandall, PhD (PRINCIPAL_INVESTIGATOR)

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By research site
Texas Health Presbyterian Hospital Dallas· Dallas, TX

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