Systematic comparative validation of self-report measures of sedentary time against an objective measure of postural sitting (activPAL).
Sebastien F M ChastinM L DontjeD A SkeltonI ČukićR J ShawJ M R GillC A GreigC R GaleI J DearyG DerP M Dallnull nullPublished in: The international journal of behavioral nutrition and physical activity (2018)
Self-report measures of sedentary time result in large bias, poor precision and low correlation with an objective measure of sedentary time. Choice of tool depends on the research context, design and question. Choice can be guided by this systematic comparative validation and, in the case of population surveillance, it recommends to use a visual analog scale and a 7 day recall period. Comparison between studies and improving population estimates of average sedentary time, is possible with the comparative correction factors provided.