Sedentary behaviour and cardiovascular disease: A review of prospective studies

ArticleinInternational Journal of Epidemiology 41(5):1338-53 · May 2012with32 Reads
Impact Factor: 9.18 · DOI: 10.1093/ije/dys078 · Source: PubMed

Current estimates from objective accelerometer data suggest that American adults are sedentary for ∼7.7 h/day. Historically, sedentary behaviour was conceptualized as one end of the physical activity spectrum but is increasingly being viewed as a behaviour distinct from physical activity. Prospective studies examining the associations between screen time (watching television, watching videos and using a computer) and sitting time and fatal and non-fatal cardiovascular disease (CVD) were identified. These prospective studies relied on self-reported sedentary behaviour. The majority of prospective studies of screen time and sitting time has shown that greater sedentary time is associated with an increased risk of fatal and non-fatal CVD. Compared with the lowest levels of sedentary time, risk estimates ranged up to 1.68 for the highest level of sitting time and 2.25 for the highest level of screen time after adjustment for a series of covariates, including measures of physical activity. For six studies of screen time and CVD, the summary hazard ratio per 2-h increase was 1.17 (95% CI: 1.13-1.20). For two studies of sitting time, the summary hazard ratio per 2-h increase was 1.05 (95% CI: 1.01-1.09). Future prospective studies using more objective measures of sedentary behaviour might prove helpful in quantifying better the risk between sedentary behaviour and CVD morbidity and mortality. This budding science may better shape future guideline development as well as clinical and public health interventions to reduce the amount of sedentary behaviour in modern societies.

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    • "More recent work supports the link between higher levels of sedentary behaviour and cardio-metabolic outcomes including: diabetes, the metabolic syndrome, weight gain and, fatal and non-fatal cardiovascular disease (de Rezende et al., 2014; Ford & Caspersen, 2012; A.A. Thorp et al., 2011). A recent review has confirmed that the increased risk of cardio-metabolic outcomes such as cardiovascular disease and type 2 diabetes associated with excessive sedentary behaviour, remains even after controlling for leisure time participation in moderate/vigorous physical activity (Biswas et al., 2015). "
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    • "Indeed, advances in technology, increased desk-based employment, infrastructure designed around car use (and not walking and cycling), and the ubiquitous use of computers and television viewing in the home are all social/ environmental factors that have had a negative effect on PA [17] , largely through unconscious processing of behaviour . In addition, engineering PA out of daily life has not only reduced PA but also increased sedentary behaviour, which growing evidence now demonstrates is a risk factor for NCDs in its own right [18]. Social inequality in PA is evident in communities and environments, with low activity, poor health and wellbeing being associated with multiple indicators of deprivation [19]. "
    [Show abstract] [Hide abstract] ABSTRACT: Solutions to the global challenge of physical inactivity have tended to focus on interventions at an individual level, when evidence shows that wider factors, including the social and physical environment, play a major part in influencing health-related behaviour. A multidisciplinary perspective is needed to rewrite the research agenda on physical activity if population-level public health benefits are to be demonstrated. This article explores the questions that this raises regarding the particular role that the UK National Health Service (NHS) plays in the system. The National Centre for Sport and Exercise Medicine in Sheffield is put forward as a case study to discuss some of the ways in which health systems can work in collaboration with other partners to develop environments and systems that promote active lives for patients and staff.
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    • "SB is often quantified as sitting time and defined as any waking behaviour characterized by an energy expenditure 1.5 metabolic equivalents (METs) while in a sitting or reclining position.[1] SB is different from physical inactivity, which indicates not meeting physical activity (PA) recom- mendations.[2] Recent reviews and meta-analyses have linked adult SB to type 2 diabetes,3456 cardiovascular diseases,[3,5,7] cardiovascular mortality3457,8] and all-cause mortality.34567891011 Moreover, it is suggested that these risks of SB may be partly independent of PA levels.[1] "
    [Show abstract] [Hide abstract] ABSTRACT: Sedentary behaviour is increasingly recognized as an important health risk, but comparable data across Europe are scarce. The objective of this study was to explore the prevalence and correlates of self-reported sitting time in adults across and within the 28 European Union Member States.
    Full-text · Article · Mar 2016 · PLoS ONE
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