Associations of physical activity and sedentary time from childhood to adolescence with cognition in adolescence: The PANIC study
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Purpose
Investigate the associations of cumulative exposure to physical activity (PA), sedentary time and screen time from childhood to adolescence over an 8-year follow-up with cognition in adolescence.
Methods
Altogether, 260 adolescents (136 boys) who were 15–17 years at 8-year follow-up were analysed. PA and sedentary time were assessed using an Actiheart®-device, and different types of PA, non-screen-based sedentary time and screen time were assessed by a questionnaire at baseline, 2-year and 8-year examinations. Cognition was assessed using CogState tests at 8-year examinations.
Results
Self-reported cumulative unsupervised PA from childhood to adolescence was inversely associated with accuracy in working memory task (standardized regression coefficient (β)=-0.127, 95% confidence interval (CI) −0.247 to −0.008) in adolescence. Self-reported non-screen-based sedentary time was inversely associated with reaction time (β=-0.176, 95% CI −0.299 to −0.053) and accuracy (β=-0.149, 95% CI −0.274 to −0.024) in working memory tasks. Self-reported screen time was inversely associated with reaction time (β=-0.194, 95% CI −0.316 to −0.071) and (β=-0.233, 95% CI −0.355 to −0.112) in both working memory tasks and directly associated with overall cognition (β=0.187, 95% CI 0.070-0.305).
Conclusion
Accumulating less unsupervised PA and more screen time from childhood to adolescence was associated with better cognition in adolescence.
