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Theses

Comportement alimentaire, activité physique, sédentarité et inégalités sociales de santé à l’adolescence

Abstract : Background: During adolescence, the higher the socio-economic status (SES), the better the health status is and reflects the existence of social inequalities in health. These inequalities could be explained by the unequal distribution of lifestyles such as physical activity (PA), sedentary behaviour (SB) and dietary behaviour (DB) according to adolescents’ SES. The associations between lifestyles and social inequalities in health are unclear among adolescents. Objectives: This thesis aimed to analyze the associations between lifestyles and social inequalities in health during adolescence through three objectives: 1) to describe lifestyles and their distribution according to adolescents’ SES, 2) to evaluate the effectiveness of a public health intervention on the reduction of social inequalities in health among adolescents, and 3) to measure and quantify the mediating effects of lifestyles on social inequalities in health among adolescents. Methods: To address these objectives, data from two trials aimed at preventing overweight and obesity among adolescents were used: PRALIMAP (PRomotion de l’ALImentation et de l’Activité Physique) and PRALIMAP-INES (PRALIMAP-INEgalités de Santé). PA, SB were measured using the International Physical Activity Questionnaire and DB using a food frequency questionnaire. SES was defined using the Social Position Index of Students and the Family Affluence Scale. Statistical analyses included linear, mixed and logistic regression models and an analysis of latent transitions. Results: Low SES adolescents had lower levels of PA and less adapted DB than high SES ones. Overall, DB was not associated with adolescents’ SES. Social inequalities in weight and quality of life were highlighted. There was no evidence that a universal intervention could reduce social inequalities in weight. Mediating effects of behaviours in the association between SES and health status were suggested. Conclusions: These results underline the importance of taking SES into account in order to reduce social inequalities in health among adolescents. Behaviours appear to be important levers to reduce social inequalities in health.
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https://hal.univ-lorraine.fr/tel-03051590
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Submitted on : Thursday, December 10, 2020 - 11:24:45 AM
Last modification on : Thursday, January 14, 2021 - 4:20:03 PM

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  • HAL Id : tel-03051590, version 1

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Florian Manneville. Comportement alimentaire, activité physique, sédentarité et inégalités sociales de santé à l’adolescence. Santé publique et épidémiologie. Université de Lorraine, 2020. Français. ⟨NNT : 2020LORR0128⟩. ⟨tel-03051590⟩

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