Hidde P. van der Ploeg

TL;DR: New WHO 2020 guidelines on physical activity and sedentary behaviour reaffirm messages that some physical activity is better than none, that more physical Activity is better for optimal health outcomes and provide a new recommendation on reducing sedentary behaviours.

TL;DR: The association between sitting and all-cause mortality appeared consistent across the sexes, age groups, body mass index categories, and physical activity levels and across healthy participants compared with participants with preexisting cardiovascular disease or diabetes mellitus.

TL;DR: Higher amounts of daily total sitting time are associated with greater risk of all-cause mortality and moderate-to-vigorous physical activity appears to attenuate the hazardous association, providing a starting point for identifying a threshold on which to base clinical and public health recommendations for overall sitting time, in addition to physical activity guidelines.

TL;DR: Limited evidence was found to support a positive relationship between occupational sitting and health risks, and the heterogeneity of study designs, measures, and findings makes it difficult to draw definitive conclusions at this time.

TL;DR: Individual level factors such as age, physical activity levels, body mass index, socio-economic status and mood were all significantly correlated with sedentariness and a trend towards increased amounts of leisure screen time was identified in those married or cohabiting while having children resulted in less total sitting time.