“…This has also been shown in other trials where psychological interventions such as cognitive skills training, relaxation training, and guided imagery have not had positive effects on PSF measures in patients undergoing cardiac surgery [19], abdominal hysterectomy [20], colorectal resections [21], or hip and knee arthroplasty [22]. However, in the current study, fatigue and the impact of fatigue were significantly improved in the intervention group at postoperative day 30.…”