No_intervention: No Intervention

In the preoperative period, patients in the control group completed the Patient Demographic Information Form and the Trait Anxiety Inventory. Patients were preoperatively informed about wearing a smart bracelet on postoperative days 1 and 2 to track step count and walking distance. Physiological parameters, state anxiety, and pain levels (Short-Form McGill Pain Questionnaire) were evaluated at pre-test, 30 minutes later, and 15 minutes after mobilization. Additionally, pain intensity was assessed immediately after mobilization. On postoperative days 1 and 2, all assessments were conducted twice daily. The frequency of analgesic administration was also monitored.

Experimental: Experimental

In the preoperative period, patients completed the Patient Demographic Information Form and the Trait Anxiety Inventory. Patients were preoperatively informed about wearing a smart bracelet on postoperative days 1 and 2 to track step count and walking distance. Furthermore, patients in the intervention group received video-assisted training on diaphragmatic breathing and progressive muscle relaxation (PMR) exercises.~In the intervention group, PMR was performed twice a day on postoperative days 1 and 2. Physiological parameters, state anxiety, and pain levels (Short-Form McGill Pain Questionnaire) were measured at pre-test, 5 minutes after each PMR session, and 15 minutes after mobilization. Additionally, pain intensity was assessed immediately after mobilization. The frequency of analgesic administration was also monitored.