This article has been accepted for publication in British Journal of Sports Medicine following peer\ud review. The definitive copyedited, typeset version, BUCKLEY, J.P. ... et al., 2015. The sedentary office: an expert statement on the growing case for change towards better health and productivity. British Journal of Sports Medicine, 49, pp. 1357-1362, is available online at: http://bjsm.bmj.com/content/49/21/1357An international group of experts convened to provide\ud guidance for employers to promote the avoidance of\ud prolonged periods of sedentary work. The set of\ud recommendations was developed from the totality of the\ud current evidence, including long-term epidemiological\ud studies and interventional studies of getting workers to\ud stand and/or move more frequently. The evidence was\ud ranked in quality using the four levels of the American\ud College of Sports Medicine. The derived guidance is as\ud follows: for those occupations which are predominantly\ud desk based, workers should aim to initially progress\ud towards accumulating 2 h/day of standing and light\ud activity (light walking) during working hours, eventually\ud progressing to a total accumulation of 4 h/day (prorated\ud to part-time hours). To achieve this, seated-based work\ud should be regularly broken up with standing-based\ud work, the use of sit–stand desks, or the taking of short\ud active standing breaks. Along with other health\ud promotion goals (improved nutrition, reducing alcohol,\ud smoking and stress), companies should also promote\ud among their staff that prolonged sitting, aggregated\ud from work and in leisure time, may significantly and\ud independently increase the risk of cardiometabolic\ud diseases and premature mortality. It is appreciated that\ud these recommendations should be interpreted in relation\ud to the evidence from which they were derived, largely\ud observational and retrospective studies, or short-term\ud interventional studies showing acute cardiometabolic\ud changes. While longer term intervention studies are\ud required, the level of consistent evidence accumulated to\ud date, and the public health context of rising chronic\ud diseases, suggest initial guidelines are justified. We hope\ud these guidelines stimulate future research, and that\ud greater precision will be possible within future iterations
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