Assessment of the Effects of a 24-hour Cold and Heat Exposure on the Factors Influencing Food Intake

Recruiting

• Conditions: Cold Exposure; Eating Habit; Heat

• Registration Number: NCT05584527
• Lead Sponsor: Direction Centrale du Service de Santé des Armées

Brief Summary

Military personnel and athletes have a very high energy expenditure which is increased during certain key periods (intense training, competition and mission). Compensating for this expenditure through food can be complicated by physiological ingestive limits and logistical and organizational constraints (number of meals, availability of food), which leads these populations to regularly experience energy deficit situations (intake below requirements), which could alter physical and cognitive performance and major physiological functions.

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

Not available

Study Timeline

• Study First Submitted: 2022-10-14
• Study First Submitted QC: 2022-10-14
• Study First Posted: 2022-10-18
• Study Start: 2022-11-28
• Status Verified: 2022-12
• Last Update Submitted: 2022-12-08
• Last Update Posted: 2022-12-09
• Primary Completion: 2025-05
• Study Completion: 2025-05

Recruitment & Eligibility

• Status: RECRUITING
• Sex: Male
• Target Recruitment: 24

Inclusion Criteria

• Male
• 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

• Unusual eating pattern (< 3 meals per day) or irregular eating pattern
• 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.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Total energy intake (in kilojoules) measured at the end of each condition (heat exposure, cold exposure and thermoneutral exposure)	Through study completion (30 months)

Trial Locations

Locations (1)

Institut de Recherche Biomédicale des Armées; 🇫🇷 Brétigny-sur-Orge, France