2.4. Sample Size Calculation and Statistical Analysis
We expected a 67% proportion of adherent subjects to the exercise program in the EG (i.e., using the health watch and app), as observed in a previous study [Quantitative variables were expressed as the median and interquartile range (Q1–Q3). Due to the low sample size, nonparametric tests were used for analyses. The Wilcoxon matched-pairs signed-rank test was used to assess the changes between W0 and W18. The Fisher exact test was planned to be used to compare, between the two groups, the proportions of participants who improved the 