[Physical activity, a key-role in preventive medicine].

The importance of physical activity in preventing diseases and maintaining physical and mental health in humans is undeniable. An active lifestyle plays a significant role in the primary, secondary, and tertiary prevention of chronic diseases. Despite abundant evidence in the literature and recommendations from the World Health Organization (WHO) on physical activity, the global population remains insufficiently active. It is therefore essential to promote physical activity and educate individuals in order to create an environment conducive to the sustainable adoption of an active lifestyle and the maintenance of health. In Belgium, initiatives such as «Sport-Health» programmes are emerging to overcome barriers to autonomous physical activity by offering tailored programmes for individuals with chronic diseases or those wishing to age healthily. With this perspective, the «Citizen, in motion for my health» project offers physical activity sessions while improving the physical literacy of participants to promote their autonomy.