Mark Hamer|Emmanuel Stamatakis
Prospective Study of Sedentary Behavior, Risk of Depression, and Cognitive Impairment
North-West University|University College London|University of Sydney|University College London
modernday lifestyles characterized large amounts prolonged sedentary activities may pose risk health right although little known effects mental health examined association several types common sedentary behaviors tv viewing internet use reading different aspects mental healthwe conducted 2yr followup 6359 age 649 91 yr men women english longitudinal study ageing cohort communitydwelling older adults selfreported tv viewing time reading use internet assessed baseline mental health assessed using eightitem centre epidemiological studies depression scale measure depressive symptoms neuropsychological tests memory verbal fluency assess cognitive functionat baseline tv viewing time 6 vs 2 h d1 associated higher depressive symptoms coefficient 049 95 confidence interval ci 063 035 poorer global cognitive function coefficient 116 95 ci 100 131 conversely participants using internet reported lower depressive symptoms coefficient 058 95 ci 050 066 higher global cognitive function coefficient 127 95 ci 137 118 association sedentary behaviors baseline change mental health measures followup suggesting difference scores persisted increase timesome sedentary behaviors linked adverse mental health likely associations driven contrasting environmental social contexts occur