Activité physique et sédentarité de l'adolescent et de l'adulte : facteurs associés, impact sur la santé, efficacité d'une intervention

Abstract : Background: Relationships between physical activity (PA), sedentary behaviour (SB) and health have been usually investigated independently. However, taking into account these two components simultaneously is an essential requirement to understand their health effects. Objectives: To investigate the relationships between PA, SB and health in French population (adolescents and adults). This aim can be divided in 3 different research headings: (1) identification of the correlates of PA and SB, (2) measurement of the health impact of PA and SB, (3) evaluation of the effectiveness of intervention aimed to improve PA and SB. Methods: We used data from different survey and studies carried out in French general or specific population. The PRALIMAP trial (PRomotion de l'ALImentation et de l'Activité Physique) in adolescents, the SUVIMAX trial (SUpplémentation en VItamines et Minéraux Anti-oXydants) in adults and the health Barometer Surveys (2005 and 2008) in general population. For the heading 1 we investigated the socio-demographic and economic correlates of PA and SB. For the heading 2 we analyzed the common and specific effects of PA and SB on health, especially health-related quality of life (HRQoL) and overweight prevalence. For the heading 3 we assessed the effectiveness of intervention on PA and SB change and its relationship with overweight reduction. Results: PA and SB were highly correlates to socio-economic characteristics in both adolescents and adults. In bidirectional analyses taking into account the domains of PA and SB, we yielded that PA and SB could be both causes and consequences of HRQoL. Intervention (PRALIMAP) was effective in improving PA and SB and this improvement partly mediated the weight reduction. Conclusion: The results of this work emphases the importance of PA and SB as health determinants whatever the life period (adolescents and adults) particularly in terms of weight reduction and HRQoL improvement.
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Abdou-Moutawakirou Yacoubou Omorou. Activité physique et sédentarité de l'adolescent et de l'adulte : facteurs associés, impact sur la santé, efficacité d'une intervention. Médecine humaine et pathologie. Université de Lorraine, 2015. Français. ⟨NNT : 2015LORR0198⟩. ⟨tel-01754459⟩

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