Children's Cortisol and Cell-Free DNA Trajectories in Relation to Sedentary Behavior and Physical Activity in School: A Pilot Study.

摘要: The worldwide prevalence of mental disorders in children and adolescents increased constantly. Additionally, the recommended amount physical activity (PA) is not achieved by this age group. These circumstances are associated with negative impacts on their health status later life can lead to public issues. exposure natural green environments (NGE) seems be beneficial for human health. compulsory school system offers great opportunities reach every child suitable health-related contents interventions at an early stage. concept Education Outside Classroom (EOtC) uses NGE sets focus PA. Therefore, EOtC might a educational intervention promote students association between biological stress markers sedentary behavior (SB) plus PA insufficiently evaluated settings. This exploratory study aims evaluate students' cortisol, circulating cell-free deoxyribonucleic acid (cfDNA) levels, SB, light (LPA), moderate-to-vigorous (MVPA). We assessed data from program (intervention group [IG], n = 37; control [CG], 11) three seasons (fall/spring/summer) outdoor lessons (IG) normal indoor (CG). SB were accelerometry, cortisol cfDNA levels saliva samples. Fitted Bayesian hierarchical linear models cfDNA, compositional SB/LPA/MVPA. A steady decline IG relatively high LPA (posterior mean -0.728; credible interval [CRI 95%]: -1.268; -0.190). MVPA tended exhibit similar effect CG. positively mean, 1.285; CRI: 0.390; 2.191), same likely both groups. To conclude, support healthy decrease during NGEs. Associations SB/PA need further research. facilitates formulation straightforward directed hypotheses research potential promotion EOtC.