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Sedentary people are advised to do at least one hour of moderate activity a day

BMJ 2016; 354 doi: (Published 28 July 2016) Cite this as: BMJ 2016;354:i4166
  1. Ingrid Torjesen
  1. London

Doing at least an hour a day of moderate physical activity, such as brisk walking or cycling, seems to eliminate the increased risk of death associated with sitting for more than eight hours a day, a study published in the Lancet shows.1

Researchers used data from 16 studies that had looked at physical activity, sedentary time, and mortality. They analysed the raw study data according to a harmonised protocol that categorised the reported sitting and television viewing time into four standardised groups and the physical activity into quartiles, and they combined the data.

The analysis included data on 1 005 791 …

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