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University of Regensburg
DE
2 researchers0 verified2 linked papers13,207 indexed citations
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2020 · British Journal of Sports Medicine · 11,486 citations
World Health Organization 2020 guidelines on physical activity and sedentary behaviour
Objectives To describe new WHO 2020 guidelines on physical activity and sedentary behaviour. Methods The guidelines were developed in accordance with WHO protocols. An expert Guideline Development Group reviewed evidence to assess associations between physical activity and sedentary behaviour for an agreed set of health outcomes and population groups. The assessment used and systematically updated recent relevant systematic reviews; new primary reviews addressed additional health outcomes or subpopulations. Results The new guidelines address children, adolescents, adults, older adults and include new specific recommendations for pregnant and postpartum women and people living with chronic conditions or disability. All adults should undertake 150–300 min of moderate-intensity, or 75–150 min of vigorous-intensity physical activity, or some equivalent combination of moderate-intensity and vigorous-intensity aerobic physical activity, per week. Among children and adolescents, an average of 60 min/day of moderate-to-vigorous intensity aerobic physical activity across the week provides health benefits. The guidelines recommend regular muscle-strengthening activity for all age groups. Additionally, reducing sedentary behaviours is recommended across all age groups and abilities, although evidence was insufficient to quantify a sedentary behaviour threshold. Conclusion These 2020 WHO guidelines update previous WHO recommendations released in 2010. They 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. These guidelines highlight the importance of regularly undertaking both aerobic and muscle strengthening activities and for the first time, there are specific recommendations for specific populations including for pregnant and postpartum women and people living with chronic conditions or disability. These guidelines should be used to inform national health policies aligned with the WHO Global Action Plan on Physical Activity 2018–2030 and to strengthen surveillance systems that track progress towards national and global targets.
2007 · Cambridge University Press eBooks · 1,721 citations
Postcolonial English
The global spread of English has resulted in the emergence of a diverse range of postcolonial varieties around the world. Postcolonial English provides a clear and original account of the evolution of these varieties, exploring the historical, social and ecological factors that have shaped all levels of their structure. It argues that while these Englishes have developed new and unique properties which differ greatly from one location to another, their spread and diversification can in fact be explained by a single underlying process, which builds upon the constant relationships and communication needs of the colonizers, the colonized, and other parties. Outlining the stages and characteristics of this process, it applies them in detail to English in sixteen different countries across all continents as well as, in a separate chapter, to a history of American English. Of key interest to sociolinguists, dialectologists, historical linguists and syntacticians alike, this 2007 book provides a fascinating new picture of the growth and evolution of English around the globe.