Table 2.

Definitions of the intervention strategies reported

Name of the strategy	Definition
Active lessons	Teachers’ normal planned class lessons, where the delivery method rather than the content is changed (PA into curriculum subjects)
Community involvement:	Participation/support of community members/facilities outside schools
Educational	Theory based sessions only (health-related)
Environmental modifications:	A supportive school environment encourages physical activity throughout the school day (e.g. active indoor and outdoor environments, active equipment)
Incentives/rewards:	Incentives to promote or reward physical activities or certain goals
Physical activity sessions	Opportunities for PA (supervised or unsupervised) during schools’ hours (e.g. during recess and lunchbreak)
Peer support:	Adolescent leaders to encourage PA among their peers
Research support:	Direct support from the research team involved
School policy	Changes, adaptation of the school policies to encourage physical activity and reduce sitting time
Teacher training	Teacher development sessions, pedagogical strategies

Abbreviations: PA = physical activity