[Determinants of collaborative practices in schools in promoting healthy eating and physical activity and role of the nurse in these practices]. / Déterminants des pratiques collaboratives en milieu scolaire dans la promotion d'une saine alimentation et de l'activité physique et rôIe de l'infirmière dans ces pratiques.

CONTEXT: Overweight and obesity rates have more than doubled among 12 to 17 year-olds over the past 25 years. To date, few studies have documented collaborative practices in activities aimed at promoting healthy eating and physical activity in schools, although collaboration is a key element in health promotion. OBJECTIVES: To identify the determinants that influence collaborative practices in secondary schools. To define the role of the school nurse in these practices. METHOD: A descriptive multiple case study was conducted in three Quebec secondary schools. The methods used were: focus group; interviews (21); observation (5); and document review (3). Qualitative analysis was conducted by more than one researcher. RESULTS: Determinants of collaborative practices relate to the individual, team and organization. The time needed to adapt to a role is a determinant that influences the contribution a newly appointed school nurse can make to collaborative practices in a school setting. CONCLUSION: Understanding the determinants that influence collaborative practices paves the way to establishing the conditions conducive to various stakeholders becoming involved in promoting the health of young people.