NCT03096951.

Methods	Single‐blinded, parallel‐arm randomised controlled trial
Participants	Patients with colon cancer requiring surgery, more than 40 years of age with frailty phenotype criteria <3 (n = 70)
Interventions	Pre and postoperative tele‐supervised rehabilitation vs tele‐supervised rehabilitation postoperatively
Outcomes	Cardiorespiratory fitness assessed with 6MWT, muscle strength measured with dynamometer, muscle endurance determined with 1‐minute sit‐to‐stand test, QoL assessed with Euroqol‐5D‐3L (EQ‐5D‐3L) questionnaire, fatigue using Functional Assessment of Cancer Therapy: Fatigue questionnaire, physical activity assessed with International Physical Activity Questionnaire Short Form, executive functions using Trail Making test and Fluency test. Weight, lean body mass and fat body mass are measured with bioelectrical impedance analysis (BIA). Energy expenditure using Sensewear armband. A blood test is used to measure fasting glucose, fasting insulin, cholesterol, neutrophil/lymphocyte, C‐reactive protein. Adherence expressed as the number of sessions completed.
Notes

Study completion date October 2019