Comparison of Fatigue in Varying Hot Environments

Not Applicable

Completed

• Conditions: Hyperthermia
• Interventions: Other: Hot/Dry; Other: Warm/Humid

• Registration Number: NCT04624919
• Lead Sponsor: State University of New York at Buffalo

Brief Summary

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

Detailed Description

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.

Study Timeline

• Study Start: 2019-12-10
• Study First Submitted: 2020-10-30
• Study First Submitted QC: 2020-11-05
• Study First Posted: 2020-11-12
• Primary Completion: 2021-06-30
• Study Completion: 2021-06-30
• Status Verified: 2021-10
• Last Update Submitted: 2021-10-13
• Last Update Posted: 2021-10-14

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 13

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Hot/Dry	Hot/Dry	-
Warm/Humid	Warm/Humid	-

Primary Outcome Measures

Name	Time	Method
Smoothness of movement	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.
Energy Expenditure	90 minutes	The amount of energy the body is expending during work. This is measured using indirect calorimetry.

Secondary Outcome Measures

Name	Time	Method
Perceptual fatigue	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".

Trial Locations

Locations (1)

Center for Research and Exercise in Special Environments; 🇺🇸 Buffalo, New York, United States