Data collection
JP
Interviews and focus groups took place between April and August 2021 in person or via Zoom. Two experienced qualitative researchers (JP and KP) who were not involved in the trial conducted the interviews and focus groups. Interviews were conducted with senior management and onsite management staff. These allowed for detailed exploration of organizational contexts and discussion of commercially sensitive information. Focus groups were held with exercise group facilitators to allow exploration of a breadth of experiences and explore similarities and differences across practice settings. Separate focus groups were held specific to the exercise group (SUp and Flex and Stretch). One physical therapist had an individual interview as no other therapists attended the planned focus group. Three unplanned focus groups occurred when management and clinical staff at the same facility chose to be interviewed together. Questions followed an interview guide informed by Curran [