IMPact of AerobiC Exercise in Addition to Nutritional Treatment on Quality of Life After Pancreatectomy

30-minute net aerobic exercise sessions at moderate intensity (3-5 METS, 60%-70% of maximum heart rate) three times per week. Walking, cycling, or swimming, with the option to alternate activities to enhance adherence to the program. Each session will include 10 minutes of warm-up (gradual increase in intensity); 30 minutes of aerobic exercise and 10 minutes of cool-down (gradual reduction of intensity and optional stretching). Total weekly exercise duration will be 150 minutes