Fig. 3From: Increase in body weight over a two-year period is associated with an increase in midfoot pressure and foot painCalculation of direct and indirect effects of change in body weight on change in functional limitation. Values are standardised β coefficients: (a) direct effect of change in body weight on functional limitation, (b) indirect effect of change in body weight, mediated by change in midfoot pressure. (*) Direct effect, (**) Indirect effect. The total effect of change in body weight on functional limitation is therefore the sum of the direct and indirect effects, i.e. total impact is 0.374 + 0.102 = 0.476Back to article page