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Adjustment for physical activity in studies of sedentary behaviour

机译：调整久坐行为研究中的体育活动

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Sedentary behaviour (too much sitting, as distinct from too little exercise) has emerged as a potentially significant public health issue. Analytically, researchers have reported ‘independent’ associations between sedentary behaviour (SB) and a number of health outcomes by adjusting for physical activity (PA) (and other confounders), and conclude that SB is associated with the outcome even in those who are physically active. However, the logical rationale for why adjustments for PA are required is often not delineated, and as a consequence, PA has been conceptualised as a confounder, an intermediary, and an effect measure modifier—sometimes simultaneously—in studies of SB and health outcomes. This paper discusses the analytical assumptions underlying adjustment for PA in studies of SB and a given outcome, and considers the implications for associations between SB and health.
机译：久坐的行为（坐得太多，而运动得很少）已经成为潜在的重大公共卫生问题。通过分析，研究人员报告了通过调整身体活动（PA）（和其他混杂因素），久坐行为（SB）与许多健康结果之间的“独立”关联，并得出结论，即使在那些身体健康的人中，SB也与结果相关活性。但是，为什么不对为什么需要对PA进行调整的逻辑原理往往没有加以描述，因此，在SB和健康结果的研究中，有时将PA概念化为混杂因素，中介和效果量度修正剂。本文讨论了在SB研究和给定结局中针对PA进行调整的分析假设，并考虑了对SB与健康之间关联的影响。

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