“…Although the effect sizes were small, a small effect size can make a useful contribution to the population's health using low-cost interventions readily available to the general public. Our study adds to the literature on tailoring that to date has found mixed evidence of the efficacy of tailoring advice in positively influencing attitudes toward undertaking physical activity (Bull, Holt, Kreuter, Clark, & Scharff, 2001;Calfas et al, 2002;Cardinal & Sachs, 1995;Hageman, Noble Walker, & Pullen, 2005;Hurling et al, 2007;Hurling, Fairley, & Dias, 2006;Kreuter, Bull, Clark, & Oswald, 1999;Kreuter, Oswald, Bull, & Clark, 2000;Vandelanotte & De Bourdeaudhuij, 2003). The action plan increased confidence but not intention to undertake SBT.…”