fig. 1From: Association of physical activity, sedentary behaviours and sleep duration with cardiovascular diseases and lipid profiles: a Mendelian randomization analysisAssumptions of a Mendelian randomization analysis for lifestyle factors and risk of cardiovascular diseases. Broken lines represent potential pleiotropic or direct causal effects between variables that would violate Mendelian randomization assumptions. MVPA = moderate-to-vigorous physical activity, VPA = vigorous physical activity; CAD = coronary artery disease, MI = myocardial infarctionBack to article page