Study design
Semi-structured interviews were conducted with participants receiving and service providers delivering a PA intervention, as part of the REACT randomised controlled trial (RCT). Interviews were conducted at six (mid-intervention), 12 (post-intervention) and 24-months (longer-term follow up). Ethical approval was provided by the National Health Service (NHS) Southeast Coast–Surrey Research Ethics Committee (15/LO/2082).The REACT study was a pragmatic multi-centre, two-arm, single-blind, parallel-group, RCT (ISRCTN registration number 45627165) [
Group-exercise sessions were delivered over 12-months, with twice weekly exercise sessions for the first 12-weeks, then weekly sessions up to 52-weeks [REACT logic model