Secondary outcomes
Both groups increased their haemoglobin levels and their sit-to-stand test score slightly between the baseline and the preoperative testing. Only the control group improved their 6-MWT by 37 meters (95% c.i. 8–67 m), and a small improvement of −2.4 of the PG-SGA score was found for the intervention group (95% c.i. −3.6 to −1.2). Neither of the groups showed any other statistically significant changes in other measures of physical function, nutritional or blood work (Additional intervention-specific variables and surgical proceduresValues are 