Data collection The community organizations forwarded the names of participants to the research coordinator who verified their eligibility and interest. A trained interviewer administered a closed questionnaire to participants, as well as tests lasting 90 minutes in the facilities of the community organizations (pre-test). Participants signed a consent form for the study and a Research Ethics Board certificate from the Université de Montréal had previously been obtained. Three months later, at the end of the program for the experimental groups, the same interviewers (with a few exceptions) administered the same questionnaire, in the same room, at the same organization (post-test). Each participant received a token sum of $10 for each of the measurement periods.