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OpenTrials
Completed

NCT Number: NCT05327764

Work-To-Rest Ratios

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.

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Key information

Conditions

Hyperthermia Body Temperature Changes Heat Stress Disorders Pathological Conditions, Signs and Symptoms Signs and Symptoms Wounds and Injuries

Age range

18 year–39 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University at Buffalo

Buffalo, New York, 14214, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Work to rest cycles of 40:20 minutes

Other

Walking in a hot environment for 2 hours with repeated 40 minutes of work and 20 minutes of rest

Work to rest cycles of 20:10 minutes

Other

Walking in a hot environment for 2 hours with repeated 20 minutes of work and 10 minutes of rest

Primary outcomes

  1. Change in core body temperature

    Time frame: Upon completion of 2 hours of the work protocol

    Core body temperature is measured using a rectal thermistor

  2. Change in heart rate

    Time frame: Upon completion of 80 minutes of work

    Heart rate is measured using a telemetry strap

Sponsors and collaborators

Lead sponsor

State University of New York at Buffalo

Other

Registry information

Important dates

Study start
2022
Primary completion
2023
Study completion
2023
First posted
Apr 14, 2022
Registry last updated
Nov 9, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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