RESUMEN
BACKGROUND: Given levels of sedentary behavior among youth, teachers have been called upon to increase physical activity (PA) by implementing classroom PA breaks. School-based interventions enacted in classroom settings have shown promise in increasing youth PA. Yet little is known about how teacher efficacy toward implementing classroom PA breaks may influence intervention effects. PURPOSE: Therefore, the purpose of this study was to examine how the Dearborn School Health through Integrated Nutrition and Exercise Strategies (D-SHINES) intervention, implemented across 8 schools, influenced classroom teacher's efficacy toward providing classroom PA breaks. METHODS: A mixed-methods design examined classroom teachers' efficacy toward implementing classroom PA breaks and used semi-structured interviews to better understand teachers' efficacy and implementation. RESULTS: Quantitative results indicated that teacher efficacy significantly increased over the intervention period and that general and institutional efficacy predicted higher amounts of PA breaks offered. Qualitative results suggested that to enhance teachers' facilitation of classroom PA breaks, one must tap into the institutional, student, and educational factors that constitute teacher efficacy. IMPLICATIONS FOR SCHOOL HEALTH: Designing interventions that focus on teacher efficacy toward classroom PA may be a viable way to increase PA breaks in schools. Implications for the whole school, whole community, whole child model are discussed.
Asunto(s)
Ejercicio Físico , Instituciones Académicas , Adolescente , Niño , Humanos , Estado Nutricional , Maestros , Conducta Sedentaria , EstudiantesRESUMEN
Child sleep disorders are increasingly prevalent and understanding early predictors of sleep problems, starting in utero, may meaningfully guide future prevention efforts. Here, we investigated whether prenatal exposure to maternal psychological stress is associated with increased sleep problems in toddlers. We also examined whether fetal brain connectivity has direct or indirect influence on this putative association. Pregnant women underwent fetal resting-state functional connectivity MRI and completed questionnaires on stress, worry, and negative affect. At 3-year follow-up, 64 mothers reported on child sleep problems, and in the subset that have reached 5-year follow-up, actigraphy data (N = 25) has also been obtained. We observe that higher maternal prenatal stress is associated with increased toddler sleep concerns, with actigraphy sleep metrics, and with decreased fetal cerebellar-insular connectivity. Specific mediating effects were not identified for the fetal brain regions examined. The search for underlying mechanisms of the link between maternal prenatal stress and child sleep problems should be continued and extended to other brain areas.