Sample size
G*Power software version 3.1.9.4 (Heinrich-Heine-Universität Düsseldorf, Germany) was used to calculate the sample size. An a priori power analysis was performed for a repeated-measures analysis of variance examining within-groups and between-groups interactions with two groups and two repeated measures. For an effect size = 0.25, α = 0.05 and power = 0.95, the required sample size was n = 54 in total or 27 participants in each group. Considering an anticipated dropout rate of 10%, our study was designed to include a total of n = 60 participants at the start, distributed evenly (n = 30 individuals in each group).