[What prevention programmes and which organizations are needed to support healthy ageing?].

Physical activity and exercise are recognized as one of the determinants of health. This study aims to produce a review of the logical foundations at work that support the identification of a public health problem for this determinant and how to address it through national action. The research is based on cross-analysis of data from semi-directed interviews and data extracted from documents on the development, implementation and follow-up of such actions and programmes. The study shows that fourteen national programmes were created and implemented by seven different agencies. These fourteen activities scored an average of 175 +/- 66.9 out of 300%. Actors and professionals in the field must be given more capacity to be implicated and involved while simultaneously encouraging the strengthening of relationships with their environment, in particular the institutional and organizational settings as well as the community components. In general, the structural and operational aspects of action are those which receive the most investment in such activities. Six main points arose as important: doping considered as a addictive mechanism, acknowledgement of the psychological suffering of professional athletes, youth at high risk of doping, and that the concepts of physical activity and sports should take into account a risk/ benefit analysis and the necessity to first and foremost promote health. The act of sharing and exchanging a number of experiences, at the local and regional level, resulted in the identification of synergies between these experiences on a continuum from "health promotion through physical activity and sports" to "prevention of doping". Within this framework, professionals were able to develop activities in the aforementioned domains, which until now had remained isolated and marginal. Recommendations were made to reinforce and strengthen this dynamic. Other determinants of health and public health priorities could be explored using the same methodology.