【摘 要】
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Dear editor,rnWe read with interest the commentary by Mark Tremblay and colleagues,1 which outlines the new 24-Hour Canadian sedentary behavior guidelines.These
【机 构】
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Charles Perkins Centre, Faculty of Medicine and Health, School of Health Sciences, University of Syd
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Dear editor,rnWe read with interest the commentary by Mark Tremblay and colleagues,1 which outlines the new 24-Hour Canadian sedentary behavior guidelines.These guidelines take the perspective of a continuum across the 24-h day, providing a vehicle for discussing physically active time, sitting and other sedentary time, as well as healthy sleep duration.The commentary1 focuses on the sedentary behavior (SB) recommendations in these guidelines: (1) limiting sedentary time to ≤ 8 h per day, (2) limiting recreational screen time to ≤ 3 h, and (3) breaking up long periods of sitting as often as possible throughout the day.Support for this perspective was evidenced by a survey of a sample (n =126, 6％ of total) of Sedentary Behavior Research Network (SBRN) members2 indicating broad acceptance of these SB recommendations.1 In this response, we put this survey in context and discuss the evidence base underpinning these 3 Canadian sedentary-behavior recommendations.
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