Statistical analysis
IBM SPSS statistical software version 26 (SPSS Inc., Chicago, IL, USA) for Windows was used for the statistical analysis. Means and standard deviations (SD) were used to describe the data. The Shapiro–Wilk test of normality was used to assess the normal distribution of the baseline values of the dependent variables (DASH scores and IR ROM). This test revealed a normal distribution of the baseline values of IR ROM and no normal distribution of DASH scale scores in both groups. Therefore, non-parametric tests were used for further with-in (Wilcoxon signed-rank test) and between-group (Mann–Whitney U test) analyses. This study considered the type-I error of less than 0.05 acceptable. The effect size was also calculated using the formula r = z/√n.