Physical Activity, Sedentary Behavior, and Health: Paradigm Paralysis or Paradigm Shift?

Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, Louisiana, USA.
Diabetes (Impact Factor: 8.47). 11/2010; 59(11):2717-25. DOI: 10.2337/db10-0822
Source: PubMed
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Available from: Peter Katzmarzyk, Apr 13, 2015
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    • "A study by Biddle, Pearson, Ross, and Braithwaite (2010) found that sedentary behavior patterns established during childhood or adolescence often are followed into adulthood, and that this so-called tracking seems to be stronger for sedentary behavior than for PA. In adults, sedentary time has shown to be an independent risk factor for obesity and diabetes (Katzmarzyk, 2010). Sedentary time may as well have detrimental effect on children's health if the findings observed in adults are true for children (Healy et al., 2008). "
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    ABSTRACT: We investigate how schoolchildren use different schoolyard areas during recess.•We examine schoolyard behavior using GPS, accelerometer and GIS.•Grass and playground areas had the highest proportion of moderate to vigorous activity.•Solid surface areas had the highest proportion of time spent sedentary.•Girls accumulated more sedentary time in all area types compared to boys.
    Landscape and Urban Planning 02/2015; 134. DOI:10.1016/j.landurbplan.2014.10.005 · 2.61 Impact Factor
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    • "Furthermore, sedentary behavior has been observed as a risk factor for several chronic diseases independent of physical activity (PA), including diabetes and depression (Grontved & Hu, 2011; Katzmarzyk, Church, Craig, & Bouchard, 2009; Thorp, Owen, Neuhaus, & Dunstan, 2011; de Wit, van Straten, Lamers, Cuijpers, & Penninx, 2011). Empirical evidence also supports a distinction between the physiological effects of PA and sedentary behavior (Katzmarzyk, 2010). To date, however, most of this research has focused on systemic outcomes related to muscle physiology and downstream effects on metabolic dysfunction and chronic inflammation . "
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    ABSTRACT: It is generally understood that regular moderate to vigorous physical activity (MVPA) promotes good health from head to toe. Evidence also supports the notion that too much sitting can increase all-cause mortality and risk of chronic diseases such as diabetes. Moreover, there is evidence that daily MVPA may not offset negative effects of sedentary behavior on systemic risk factors. We extend the discussion to brain structure and function and argue that while MVPA is recognized as a protective behavior against age-related dementia, sedentary behavior may also be an important contributor to brain health and even counteract the benefits of MVPA due to overlapping or interacting mechanistic pathways. Thus, the goals of this review are (1) to outline evidence linking both PA and sedentary behavior to neurobiological systems that are known to influence behavioral outcomes such as cognitive aging and (2) to propose productive areas of future research.
    Mental Health and Physical Activity 03/2014; 7(1). DOI:10.1016/j.mhpa.2014.01.001
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    • "On the heels of research showing that sedentary work—in which people sit at desks working on computers or around conference tables attending meetings—adversely affects people's health (Levine, 2010), organizations are increasingly experimenting with non-sedentary workspace designs and practices (Bennett, 2012; Lohr, 2012). Among the practices that public health scholars advocate for curbing the adverse effects of sedentary work—which include cardiovascular disease, obesity, and a shortened life span (Healy et al., 2013; Katzmarzyk, 2010; Neuhaus, Healy, Dunstan, Owen, & Eakin, 2014)—is the standing meeting. In a standing meeting, people eschew the use of chairs while developing ideas and solving problems. "
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    ABSTRACT: Non-sedentary work configurations, which encourage standing rather than sitting in the course of work, are becoming increas- ingly prevalent in organizations. In this article, we build and test theory about how non-sedentary arrangements influence inter- personal processes in groups performing knowledge work—tasks that require groups to combine information to develop creative ideas and solve problems. We propose that a non-sedentary workspace increases group arousal, while at the same time decreasing group idea territoriality, both of which result in better information elaboration and, indirectly, better group performance. The results of an experimental study of 54 groups engaged in a creative task provide support for this dual path- way model and underscore the important role of the physical space in which a group works as a contextual input to group processes and outcomes.
    01/2014; 5:910-917. DOI:10.1177/1948550614538463