Fig. 1

PRISMA flow chart. Explanations. a. Studies with ineligible exposure did not directly measure the physical activity but another facet of movement behaviour mostly sedentary time; b. For studies excluded based on the unability to quantify physical activity, it was impossible to quantify physical activity because data presented in the paper do not allow for the transformation of the activity categories in MET-h/week (e.g. when the question was “compared to other men of your age do you intend to walk slower, faster or about the same?”)