Higher Sedentary Behaviour and Not Following Screen Time Guidelines Were Associated With Unfavourable Cardiometabolic Outcomes in Childhood Nilsson, Ellinor Hidalgo Migueles, Jairo Henriksson, Pontus Delisle Nyström, Christine blood pressure cardiovascular risk factors children Aim: Sedentary behaviour may influence children's cardiometabolic health; however, evidence remains limited. This study investigated the associations between sedentary behaviour and cardiometabolic outcomes in nine-year-old children and from 4 to 9 years of age. Associations between adherence to screen time guidelines and cardiometabolic outcomes at 9 years of age were also examined. Methods: Movement behaviours were assessed using accelerometers in 411 children at 4 and 9 years of age. Cardiometabolic outcomes at 9 years of age comprised blood pressure, lipid and glucose biomarkers, and a metabolic syndrome score. Screen time was assessed via questionnaire. Compositional data analysis and analysis of covariance were used. Results: Increasing sedentary behaviour at the expense of physical activity and sleep at 9 years of age was associated with higher systolic (p = 0.021) and diastolic (p = 0.019) blood pressure. Greater sedentary behaviour at 4 years of age was associated with higher diastolic blood pressure (p = 0.050) and lower high-density lipoprotein (p = 0.034) at 9 years of age. Children adhering to screen time guidelines had a lower metabolic syndrome score (p = 0.014), low-density lipoprotein (p = 0.045), and triglycerides (p = 0.022). Conclusion: Higher sedentary behaviour and not adhering to screen time guidelines were associated with unfavourable cardiometabolic outcomes from 4 to 9 years and at 9 years of age. 2025-09-17T08:50:42Z 2025-09-17T08:50:42Z 2025-08-20 journal article E. Nilsson, J. H. Migueles, P. Henriksson, C. D. Nyström, and M. Löf, “ Higher Sedentary Behaviour and Not Following Screen Time Guidelines Were Associated With Unfavourable Cardiometabolic Outcomes in Childhood,” Acta Paediatrica (2025): 1–11, https://doi.org/10.1111/apa.70276. https://hdl.handle.net/10481/106377 10.1111/apa.70276 eng http://creativecommons.org/licenses/by-nc/4.0/ open access Atribución-NoComercial 4.0 Internacional John Wiley & Sons Ltd