Assessment of the Effects of a 24-hour Cold and Heat Exposure on the Factors Influencing Food Intake
NCT ID: NCT05584527
Last Updated: 2022-12-09
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
24 participants
OBSERVATIONAL
2022-11-28
2025-05-31
Brief Summary
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Among the many constraints to which military personnel and athletes are exposed to (stress, sleep deprivation, travel, etc.) that can increase the risk of energy deficits, the impact of thermal environmental constraints is not well known. The seasonal impact and travel to countries with very different thermal environments can lead these populations to experience cold and hot conditions for long periods.
Understanding how heat and cold exposure modifies appetite and energy intake therefore appears to be of great importance.
The hypothesis of this study is that a 24 h heat exposure would produce a rapid and long-lasting anorexigenic action impacting energy intake, while a cold exposure would produce the opposite effect (orexigenic action).
Detailed Description
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Conditions
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Keywords
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Study Design
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CASE_CROSSOVER
PROSPECTIVE
Interventions
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Heat exposure (32°C)
The participants will be exposed to heat (32°C) for 24 hours in a climatic apartment.
During the exposure,
* food intake and energy expenditure will be measured
* several physiological tests will be performed: hunger and thirst questionnaires, thermal sensations, skin temperature measurement, weighing, olfactory and gustatory capacities, food preference questionnaire, etc.
* sleep brain activity will be monitored using a headband
* urine and saliva samples will be collected.
Cold exposure (16°C)
The participants will be exposed to cold (16°C) for 24 hours in a climatic apartment.
During the exposure,
* food intake and energy expenditure will be measured
* several physiological tests will be performed: hunger and thirst questionnaires, thermal sensations, skin temperature measurement, weighing, olfactory and gustatory capacities, food preference questionnaire, etc.
* sleep brain activity will be monitored using a headband
* urine and saliva samples will be collected.
Thermoneutral exposure (24°C)
The participants will be exposed to a thermoneutral environment (24°C) for 24 hours in a climatic apartment.
During the exposure,
* food intake and energy expenditure will be measured
* several physiological tests will be performed: hunger and thirst questionnaires, thermal sensations, skin temperature measurement, weighing, olfactory and gustatory capacities, food preference questionnaire, etc.
* sleep brain activity will be monitored using a headband
* urine and saliva samples will be collected.
Eligibility Criteria
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Inclusion Criteria
* Aged 18 to 40 years old
* Active (≥ 3 hours of physical activity per week)
* Healthy (no metabolic pathology)
* Affiliated to the social security system
* Having given written consent to participate.
Exclusion Criteria
* Pattern of dietary restriction (determined by the Three-Factor Eating Questionnaire-21)
* Unusual sleep pattern (Epworth score \> 10, insomnia severity score \> 14, Pittsburgh Sleep Quality Index \> 5), sleep duration \< 6 h per night or difficulty falling asleep)
* Metabolic pathology
* On medication
* Previously exposed to unusual levels of heat or cold (vacation, missions) in the 4 months prior to inclusion
* Refusal to participate.
18 Years
40 Years
MALE
Yes
Sponsors
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Direction Centrale du Service de Santé des Armées
OTHER
Responsible Party
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Locations
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Institut de Recherche Biomédicale des Armées
Brétigny-sur-Orge, , France
Countries
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Central Contacts
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Facility Contacts
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Keyne CHARLOT, PhD
Role: primary
Other Identifiers
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2022-A01862-41
Identifier Type: OTHER
Identifier Source: secondary_id
2021PBMD08
Identifier Type: -
Identifier Source: org_study_id