Hyperthermia
Conditions
Brief summary
The purpose of the study is to compare physiological responses to two hours of work adhering to two variations of a work-to-rest ratio in a hot environment.
Interventions
OTHERWork to rest cycles of 40:20 minutes
Walking in a hot environment for 2 hours with repeated 40 minutes of work and 20 minutes of rest
OTHERWork to rest cycles of 20:10 minutes
Walking in a hot environment for 2 hours with repeated 20 minutes of work and 10 minutes of rest
Sponsors
State University of New York at Buffalo
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
NONE
Intervention model description
Randomized counterbalanced study
Eligibility
Sex/Gender
ALL
Age
18 Years to 39 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy 18-39 year old individuals * Physically active
Exclusion criteria
* History of cardiovascular, metabolic, respiratory, neural, or renal disease * Hypertensive or tachycardic during the screening visit (systolic blood pressure ≥ 140 mmHg, diastolic blood pressure ≥ 90 mmHg, resting heart rate ≥ 100 bpm) * Taking medication or supplements with a known side effect of affecting physiologic responses to exercise (e.g., acetaminophen, beta blockers, statins, aspirin) * Any form of tobacco or nicotine use in the past six months * Current musculoskeletal injury impacting physical activity * A positive pregnancy test at any point in the study * Study physician discretion based on any other medical condition or medication
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in core body temperature | Upon completion of 2 hours of the work protocol | Core body temperature is measured using a rectal thermistor |
| Change in heart rate | Upon completion of 80 minutes of work | Heart rate is measured using a telemetry strap |
Countries
United States
Outcome results
None listed