The challenges of evidence-based prehabilitation in a real-life context for patients preparing for colorectal surgery—a cohort study and multiple case analysis

Table 1 Operationalization of adherence parameters adapted to this study

	Operationalization
Coverage	\(\text{Coverage}=\frac{\text{Patients assessed by the physiotherapist and dietitian }}{\text{Patients undergoing colorectal surgery in NS}}\)
Duration	\(\text{Duration}=\text{Date of surgery}-\text{date of preoperative assessment}\)
Content	\(\text{Content exercise}=\text{number of components delivered }(\text{HIIT hospital},\text{ HIIT home},\) \(\text{strengthening exercises},\text{ wearing an accelerometer})\) \(\text{Content nutrition}=\text{number of components delivered }(\text{counselling sessions},\) \(\text{protein intake},\text{ eiFITapp})\)
Frequency^a	\(\text{Frequency exercise}=\frac{\text{adequate training sessions at hospital and home}}{\text{prescribed training sessions at hospital and home}}\) \(\text{Frequency nutrition}=\frac{\text{adequate counselling sessions and protein intake}}{\text{prescribed counselling sessions and protein intake}}\)
Adherence	\(\text{Exercise adherence}= \frac{\text{\% content}+\text{\% frequency hospital}+\text{\% frequency home}}{3}\) \(\text{Nutrition adherence}=\frac{\text{\% content}+\text{\% frequency sessions}+\text{\% frequency intake}}{3}\) \(\text{Total adherence}=\frac{\text{exercise adherence}+\text{nutrition adherence}}{2}\)

^aAn adequately performed training session was defined as a high-intensity interval training session consisting of 14 intervals of 30 s on 60% of WR_peak at the modified steep ramp test followed by 60 s at 20 W or a low-intensity interval training consisting of intervals of 30 s at 30% of WR_peak at the modified steep ramp test, followed by 60 s at 20 W; an adequate nutritional intake was defined as a protein intake of 1.5–1.9 g/kg fat-free mass

ISSN: 2047-0525