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Completed

NCT Number: NCT04624919

Comparison of Fatigue in Varying Hot Environments

The purpose of this study is to determine the impact of varying hot environments on physiological and perceptual fatigue during work.

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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

Center for Research and Exercise in Special Environments

Buffalo, New York, 14214, United States

About this study

After providing written informed consent and screening, subjects will complete two experimental visits during which they will complete treadmill work in either a hot/dry or warm/humid environment.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • 18-39 y old men and women
  • Self-reported to be healthy

Exclusion criteria

  • History of any cardiovascular, neurologic, renal, or metabolic disease
  • Current tobacco use or regular use within the last 2 years
  • Current musculoskeletal injury
  • Taking medications with known thermoregulatory or cardiovascular effects (e.g., aspirin, acetaminophen, ibuprofen, beta blockers, diuretics, psychotropics, etc.)
  • Currently pregnant or breastfeeding, or planning to become pregnant during the study
  • Inability to follow the rules of the protocols or understand the consent form
  • Contraindications of consuming a core temperature monitoring pill

Treatment and study plan

Hot/Dry

Other

Work is completed in a hot/dry environment.

Warm/Humid

Other

Work is completed in a warm/humid environment

Primary outcomes

  1. Smoothness of movement

    Time frame: 90 minutes

    The variable, jerk, determines smoothness or unevenness of physical movement during work. This is measured using accelerometers placed along the spine, ankle, and shoulder.

  2. Energy Expenditure

    Time frame: 90 minutes

    The amount of energy the body is expending during work. This is measured using indirect calorimetry.

Secondary outcomes

  1. Perceptual fatigue

    Time frame: 90 minutes

    The degree of fatigue that the subjects perceive during work. This is measured using a subjective likert 0-10 scale named the Fatigue Scale with 0 indicting "no fatigue at all" and 10 indicating "completely fatigued".

Sponsors and collaborators

Lead sponsor

State University of New York at Buffalo

Other

Registry information

Important dates

Study start
2019
Primary completion
2021
Study completion
2021
First posted
Nov 12, 2020
Registry last updated
Oct 14, 2021

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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