Survey scores of the study groups at baseline and programme end (week 12).

Negative values indicate that improvements in survey scores exceeded those in the control group; b = mean difference between groups in change from baseline to 12 weeks for paired data; 95% CI = confidence intervals of the mean difference calculated using the independent two-tailed t-test; and d = Cohen’s d. SD = standard deviation; SALS = Short Active Lives Survey; TSRQ = Treatment Self-Regulation Questionnaire; EQ-5D-5L = EuroQol-5D-5L.