Muscle architecture
At the beginning of the study, no significant differences were detected among the 5STS, 10STS, and CG in any of the muscle architecture variables. Following the intervention, significant time × group interactions were observed for both MT and PA, but not for FL.When comparing the pre- and post-intervention measurements in each group, significant increases in MT were detected in both the 5STS and 10STS groups. Similarly, only the 5STS group showed a significant increase in PA. Conversely, in the 10STS group, while an increase in PA was observed, it was not significant. In all groups, a slight decrease in FL was noted, being more pronounced in the intervention groups, although these changes were not significant.As for the CG, no significant changes were recorded in any of the studied muscle architecture variables: MT, PA, and FL (