Prolonged sitting has been increasingly recognized as a serious issue in public health. However, the cut-off point above which health is impaired in general population is still equivocal. Are there any quantitative guidelines on sitting? Especially it provides suggestions about a cut-off or threshold of daily sedentary time for adults or older people?
Our recent meta-regression analyses revealed that increased mortality risks became significant in adults (18-64) and older adults (65+) when device-measured sedentary time exceeded 9 h/day.
Sources:
1. J. Clin. Med. 2019, 8, 564; https://doi.org/10.3390/jcm8040564 2. BMC Med. 2018, 16:74; https://doi.org/10.1186/s12916-018-1062-2
Po-Wen Ku
Very good question, see debate Is the time right for quantitative public health guidelines on sitting? A narrative review of sedentary behaviour research paradigms and findings
The conclusion was that this might be premature, due to insufficient evidence, even in 2019. See https://bjsm.bmj.com/content/53/6/377
The latest evidence suggests that all adults (including 65+) should engage in less sedentary behaviors (< 9 h a day). These are derived from different studies based on accelerometer-measured sedentary time conducted by different research teams and using different analytical methods.
1. BMJ 2019; 366; Article Dose-response associations between accelerometry measured ph...
2. J. Clin. Med. 2019, 8(4), 564; Article A Threshold of Objectively-Assessed Daily Sedentary Time for...
· 3. BMC Med. 2018, 16:74; Article A cut-off of daily sedentary time and all-cause mortality in...
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