In order to implement effective actions to prevent the loss of autonomy in older adults, which has become a major issue, a crucial first step is to identify the conditions that influence it. Current approaches to health increasingly rely on a comprehensive and multidisciplinary vision, in line with so-called "socio-ecological" approaches, which argue that health is influenced by a wide range of interacting factors. However, these interdependencies and interactions are still poorly understood. It therefore seems necessary to move beyond the isolated analyses of risk factors carried out to date and adopt a holistic/systemic vision by examining both individual and environmental factors, as well as their interactions, which together can contribute to functional decline or the development of pathologies in older adults and those aging.

The aim of this study is to identify the relationships between intrapersonal and environmental factors, and their cumulative, moderating, and mediating effects on the health of older adults and those experiencing aging.

To this end, participants will be asked to complete a series of questionnaires and perform tests on various health-related dimensions. The evaluation criteria are: health, autonomy and quality of life, individual factors (health practices (e.g., physical activity), psychological characteristics (e.g., personal beliefs), socioeconomic status, etc.) and environmental factors (accessibility, living environment).

Inclusion Criteria:

• Age 55 or older
• Affiliation with, or beneficiary of, a social security system
• No objection to the study

Exclusion Criteria:

• Individuals protected by law
• unable to participate in a clinical trial
• deprived of liberty