School is an ideal setting in which to reach and impact children and adolescents in order to improve their health and wellness. A large number of scholarly articles have been publishedon the subject of school-based physical activity (PA) and wellness promotion. However, given the diversity of schools worldwide, intervention programs, curricula, and strategies are not“one size fits all” and may not be universally applicable. Theinconsistent application of theoretical frameworks and variousmeasurement methods further muddles the evidence. One problem with many school-based PA and wellness interventions istheir prospect for generalization and sustainability. In recentyears, many researchers have turned attention to devising interventions, including school-based interventions targeting children and adolescents, to reduce health-compromising sedentarybehavior, as well as to promote health-enhancing PA. Additional evidence—and stronger evidence than currently available—is needed to shed light on how these interventions canand should be scaled up, implemented, disseminated, andadopted more broadly in schools and populations.
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