Research
Adherence
The duration of uninterrupted sedentary bouts (prolonged sitting) is not significantly associated with cancer mortality risk after adjusting for MVPA and other covariates.
Don't stress too much about sitting for long uninterrupted periods if you are already reducing your total daily sitting time. The total volume of sitting is the primary driver of cancer mortality risk in this study, not necessarily how long you sit without moving.
GoodRefutesHIGH confidence
Longer sedentary bout duration was not significantly associated with greater cancer mortality risk: after adjustment for MVPA (tertile 2 vs tertile 1: HR, 1.26; 95% CI, 0.90-1.78; tertile 3 vs tertile 1: HR, 1.36; 95% CI, 0.96-1.93).
Why this rating
Prospective cohort with objective measurement.
Source
Association of Sedentary Behavior With Cancer Mortality in Middle-aged and Older US Adults
Susan C. Gilchrist et al. · JAMA Oncology · 2020
cohort · n=8002Cited 171×
Read the paper This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →