Study	Reason for exclusion
Awasthi 2019	Meta‐analysis, including prehabilitation data only (no control)
Barrett‐Bernstein 2019	Meta‐analysis, including non‐randomised cohort data
Bruns 2019	Non‐randomised design
Chen 2017	Meta‐analysis of two studies already included in this review, no new data to assess the outcomes of this review
Fulop 2021	Included colorectal surgery in general. Colorectal cancer patients not described separately in analysis.
Gillis 2016	Unimodal prehabilitation
Gillis 2019	Meta‐analysis of two studies already included in this review, no new data to assess the outcomes of this review
Karlsson 2019	Unimodal prehabilitation
Klinkhammer‐Schalke 2020	Programme initiated after surgery.
Lim 2019	Non‐randomised design
Minnella 2016	Meta‐analysis, including non‐randomised cohort data
Minnella 2017	Meta‐analysis, including non‐randomised cohort data
Minnella 2020	Comparison of two prehabilitation programmes, no control group.
Moug 2019	Unimodal prehabilitation
Ommundsen 2017	No structured intervention programme, multimodal programme not guaranteed
Onerup 2017	Protocol publication of an unimodal programme
Trépanier 2019	Meta‐analysis, including non‐randomised cohort data
Zhang 2014	Postoperative intervention