Nutritional Responses to Acute Exercise: Test of the Influence of the Nature of the Meal:

Nutritional Responses to Acute Exercise: Test of the Influence of the Nature of the Meal: EXHALIM Study

The management of body mass and energy balance requires a better understanding and mastery of the interactions between our daily activities, such as physical exercise, and the control of our food intake.

Over the past 15 years, many studies have focused on the potential effects of physical exercise on this satiety cascade and on subsequent food intake, in many populations. Thus, both in normal-weight subjects and in patients suffering from overweight and obesity, it has been shown that the performance of an acute exercise of moderate intensity promotes a transient anorectic effect, reducing feelings of hunger post -exercise, and can even induce a reduction in subsequent food intake. In healthy young adults, recent results show that high-intensity physical exercise can reduce feelings of hunger and increase the satietogenic effect of a meal compared to a control condition and low-intensity exercise. intensity. Nevertheless, it seems that the food reward (which refers to the notion of food reward) does not respond in the same way, the authors not observing any change in either liking or wanting, regardless of exercise intensity. Importantly, this literature uses ad libitum test meals, wishing to assess both satietogenic, hedonic and purely nutritional responses (assessing the amount of food intake). Nevertheless, these sensory and hedonic responses to food intake have recently been shown to be sensitive to the composition of the meal and its caloric quantity, which could induce a significant bias as to the conclusions on the effects of physical exercise. Indeed, the use of meals ad libitum, by definition, leads to caloric intake and different meal compositions. Thus, it is possible that the results obtained are strongly impacted by the nature of the test meal more than by the exercise itself. It therefore remains uncertain today to conclude as to the effects of physical exercise on the factors of the satietogenic cascade, since beyond physical exercise, the test meals compared are not identical. It therefore seems important today to develop a more coherent and adapted methodology, to better study the food and satietogenic responses to our daily activities.

In this context, the present project aims to compare the satietogenic response to a meal following acute exercise according to the nature of this meal (ad libitum versus calibrated) in healthy adults.

Inclusion Criteria:

• Male aged 18 to 30 (limits inclusive),
• with a body mass index between 20 and 25 kg.m².
• Able to give informed consent to participate in research
• Person subject to a Social Security scheme

Exclusion Criteria:

• Medical or surgical history deemed by the investigator to be incompatible with the study.
• Presence of diabetes, and any other pathology limiting the application of one or the other strategy being tested.
• Subjects undergoing energy restriction or weight loss program through physical activity at the time of inclusion or during the last 6 months.
• Taking medications that may interfere with study results
• Claustrophobia
• Subjects with cardiovascular problems, here we are talking about subjects with a history of cardiovascular and/or neurovascular pathology, as well as subjects presenting cardiovascular and/or neurovascular risk factors (excluding obesity/ overweight).
• Student or professional in the field of dietetics and nutrition
• Surgical intervention in the previous 3 months.
• Person under guardianship / curatorship or safeguard of justice
• Participant refusal to participate Person in period of exclusion from another study
• Tobacco use
• Alcohol consumption (more than 5 drinks per week).
• Special diet.
• Participation in regular and intense physical and sports activities (more than 90 minutes per week).
• Person refusing to be registered on the National File of Healthy Volunteers of the Ministry of Health,
• Subject in a period of exclusion from a previous study or having received a total amount of compensation greater than 6000 euros over the 12 months preceding the start of the trial (after verification in the Biomedical Research Volunteers File).