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The purpose of this study is to determine the impact of varying hot environments on physiological and perceptual fatigue during work.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Hot/Dry | Active Comparator |
| |
| Warm/Humid | Experimental |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Hot/Dry | Other | Work is completed in a hot/dry environment. |
| |
| Measure | Description | Time Frame |
|---|---|---|
| Smoothness of movement | The variable, jerk, determines smoothness or unevenness of physical movement during work. This is measured using accelerometers placed along the spine, ankle, and shoulder. | 90 minutes |
| Energy Expenditure | The amount of energy the body is expending during work. This is measured using indirect calorimetry. | 90 minutes |
| Measure | Description | Time Frame |
|---|---|---|
| Perceptual fatigue | 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". | 90 minutes |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Center for Research and Exercise in Special Environments | Buffalo | New York | 14214 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 39583902 | Derived | Bartman NE, Vargas NT, Cavuoto LA, Hostler D, Pryor RR. Heat strain differences walking in hot-dry and warm-wet environments of equivalent wet bulb globe temperature. Temperature (Austin). 2024 Aug 26;11(4):333-349. doi: 10.1080/23328940.2024.2384185. eCollection 2024. |
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Individual participant data can be made available upon written request.
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| ID | Term |
|---|---|
| D000084462 | Hyperthermia |
| ID | Term |
|---|---|
| D001832 | Body Temperature Changes |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D018882 | Heat Stress Disorders |
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Randomized, counterbalanced crossover design
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| Warm/Humid |
| Other |
Work is completed in a warm/humid environment |
|
| D014947 | Wounds and Injuries |