**3. Statistical Analysis**

Statistical analysis was performed using SPSS (SPSS IBM version 23.0, Armonk, NY, USA). Data normality was tested with the Kolmogorov–Smirnov test. For correlations, Pearson's correlation or Spearman's rank-order correlation were used accordingly and reported together with the percentage of explained variance (r2). In the case of within-subject measurements, paired sample *t*-tests were used for normally distributed data and two-tailed Wilcoxon signed-rank tests for nonparametric distributions. For nonparametric, independent comparisons, the Kruskal–Wallis test was used. Significance was set at *p* < 0.05.
