2.6. Statistical Analysis
Data were analyzed using SPSS Statistics for Windows, version 25.0 (SPSS Inc., Chicago, IL, USA). Normal distribution was checked using the Shapiro–Wilk test and Q-Q and P-P plots. To analyze the data, a two-way analysis of variance (ANOVA) with repeated measures was conducted. The ANOVA was applied to examine the interaction effect between the “Group” and “Time of measurement” factors. The “Group” factor was tested at three levels: manual therapy (MT) group, manual therapy plus TECAR (MT + TECAR) group, and control group. The “Time of measurement” factor was tested at three levels: baseline, second week, and one-month follow-up. If the interaction was statistically significant, the simple main effects were reported using Tukey’s post hoc test (HSD). Intention-to-treat analysis was conducted on all participants in their assigned group to ensure randomization and counter any dropout effect. In case of a dropout, previous time point values were used instead. The significance level was set at 