Table 1

Feasibility measurement categories

Categories	For participants	For physiotherapy staff
1. Efficacy	Do they report benefit?	Do they notice improvement?
2. Adherence	Using sheet for recording their gym sessions	Record participant attendance
3. Adaption	Does the intervention need adaption, for example, time or procedure?	Does the intervention require adaptation?
4. Acceptability	Satisfaction with programme and outcomes Perceived appropriateness Expressed interest	Satisfaction with participants’ outcomes Intent to use again Fit within hospital culture Perceived positive or negative effects on their time, gym availability
5. Implementation and practicality	Degree of execution, success or failure of execution Positive/negative effects on target participants Ability of participants to carry out intervention activities and cost	Amount, type of resources needed to implement Factors affecting implementation ease or difficulty, efficiency, speed or quality of implementation
6. Integration and expansion	Do they recommend expanding the intervention to other hospitals?	Does it fit with the hospital goals and physiotherapy department goals? Is cost suitable to organisation wishing to include it? Could it be applied in the future and how? Any positive or negative effects on the ROH or the department?

ROH, Royal Orthopaedic Hospital.