Effect of beta-hydroxy-beta-methylbutyrate (HMB) enriched oral nutrition supplement on surgical outcomes and physical performance in colorectal cancer patients: a randomized Controlled Trial

Interventions: The patient receives standard oral supplement (Ensure),The patient receives beta-hydroxy-beta-methylbutyrate (HMB) enriched oral supplement;Treatment,Treatment;Group 1 ,Group 2 Primary outcome(s): physical performance 1 month Short Physical Performance Battery (SPPB),physical performance 1 month Handgrip strength test ,Bioelectrical Impedance Analysis (BIA) 1 month Bioelectrical Impedance Analysis (BIA)