Study design
The design of the Run Daddy Run study was a non-randomized controlled trial (nRCT), with a two-group pretest-posttest control group. In this design, participants were recruited in sequence (see Fig. Measurements were performed immediately before the intervention (baseline) and immediately after the 14-week intervention (post-test), in June 2020. Five months after the intervention, follow-up measurements were conducted which was one year after the baseline measurements (November 2020). Follow-up measurements were conducted to investigate whether or not intervention effects would be sustained over a longer time period. For the timing of these measurements, see Fig. 
Study design and participant flow throughout the trial  