A meta-analysis of 8 studies in which 442 patients underwent liver, colorectal, gastroesophageal, and general abdominal surgery showed preoperative exercise significantly reduced pulmonary complications as well as in postoperative overall morbidity in exercise group2.
In the study 116 colorectal cancer patients were either assigned to a prehabilitation group or control.
Results shows only 4 weeks of training lead to a significant improvement in physical function3.
Patients with non-small cell lung cancer (NSCLC) who are more active before and after surgery up to 6 months reported better health outcomes after half a year4.
Meta-analytic evidence shows that pre-operative exercise training shortens hospital stays, reduces the chance of complications, and improves 6-minute walking test capabilities5.
152 patients in which half performed physical fitness training before liver, gall, pancreas, and bile duct surgery, analysis showed that in the exercise group serum albumin rose instead of fall, the muscle to fat ratio improved, 6-minute walking test was better and discharge time was accelerated6.