Detrimental associations of sedentary behaviors with depression have been identified, but findings are inconsistent. We propose a novel approach to the classification and analysis of sedentary behaviors, which differentiates between those that are passive (e.g., TV viewing) and mentally active (e.g., reading). Available evidence is summarized, and research questions relating to measurement, causal relationships and mechanisms are considered.
1 Epidemiology of Psychiatric Conditions, Substance use and Social Environment (EPiCSS), Department of Public Health Sciences, Karolinska Institutet, Solna, Sweden.
2 Physical Activity Laboratory, Baker Heart & Diabetes Institute, Melbourne, Australia; Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia.
3 Behavioral Epidemiology Laboratory, Baker Heart & Diabetes Institute, Melbourne, Australia; Swinburne University of Technology, Melbourne, Australia.
Corresponding author: Mats Hallgren, Solnavägen 1e, level 6, 113 65 Solna, Sweden. email@example.com.
Funding: Owen is supported by a National Health and Medical Research Council of Australia (NHMRC) Centre of Research Excellence Grant (#1057608), NHMRC Senior Principal Research Fellowship (#1118225), and the Victorian Government’s Operational Infrastructure Support Program. Dunstan is supported by a NHMRC Senior Research Fellowship #1078360 and the Victorian Government’s Operational Infrastructure Support Program.
Conflicts of interest: None to declare.