Table 1 Intervention content and means of implementation stratified by intervention group.
Intervention components (min) | Practical organization | Providers of interventions | Implementation facilitation and method |
|---|---|---|---|
Physically Active Learning (PAL) | |||
Physical activity in academic subjects (30 min) | Weekly | Teachers | An external collaborator provided a program tailored specifically to the subject curriculum. Teachers attended two courses during the intervention period. |
Physical education (60 min) | Weekly | Physical education teachers | Follows the normal physical education curriculum |
Physical activity (30 min) | Weekly | Teachers/physical education teachers | Students could choose between varied activities. Teachers were encouraged to motivate students during physical activity to stimulate their positive feelings and attitudes towards physical activity |
Don’t Worry – Be Happy (DWBH) | |||
Activity class (Be happy class) (60 min) | Weekly | Teachers/physical education teachers | Self-organized activity developed according to the adolescent’s activity preferences. |
Physical education (Don’t worry class) (60 min) | Weekly | Teachers/physical education teachers | Pupils led the regular PE class. Pupils practiced their Be Happy activity. |