Aging, Beta Blockers, and Thermoregulatory Responses

Trial statusRecruiting
Trial phasePhase 4
Trial typeInterventional
Biological sexAll
Age65+
SponsorUniversity of Texas Southwestern Medical Center

About this trial

This study will test the hypothesis that the drugs propranolol and metoprolol will result in greater increases in core body temperature during 3 hours of extreme heat exposure in older adults.

Eligibility criteria

Qualifiers

Healthy and free of any significant medical problems

Normal resting electrocardiogram

65+ years of age

Controlled cholesterol of less than 200 mg/dl

Disqualifiers

Known diseases or other chronic conditions requiring regular medical therapy including cancer, diabetes, neurological diseases, uncontrolled hypertension, and uncontrolled hypercholesterolemia

Serious abnormalities detected on routine screening

Taking prescribed medications or over-the-counter medications that have known influences on either cardiac function or sweating

Current smokers, as well as individuals who regularly smoked within the past 3 years

Trial design

Treatments tested in this trial

  • Ambient Heat

Treatment groups

22 Participants
are divided into 6 treatment groups

6

Treatment groups

See each treatment group below.