PrevOP-PAP intervention: computer-assisted phone-based intervention and activity calendars
outcome(s
Trained staff (i.e., trained Bachelor’s and Master’s students of psychology employed as students research assistants in the trial) followed a computer-based structured intervention [To increase maintenance self-efficacy and recovery self-efficacy, participants were first asked to review their PA-plan pursuit and indicate a success rate of implementing their PA-specific plan enactment in percent. To do so, participants used their completed activity calendars of the two weeks prior to the phone-based intervention. Participants were then asked to recall positive experiences with implementing their PA plans during the past two weeks. Following this, participants were given the opportunity to revise PA goals and associated action and coping plans or add new ones, up to a maximum of five. This was done in the same manner as in the computer-assisted face-to-face intervention with interventionists recording and reading out the intervention content to participants. If plans were kept, participants were asked to rate their plan-execution self-efficacy anew. At the end of this section, interventionists repeated each kept, altered, or new action plan aloud and asked participants to fill them into a new set of activity calendars. A summary print-out of all action and coping plans generated during the phone-based intervention session was also sent to participants’ homes.Phone-based interventions 3 and 4 had an additional optional component of network creation, when participants were encouraged to identify a sports companion, contact them (phone-based intervention 3) and include these companions (i.e., their initials) into their action plans, creating collaborative implementation intentions (phone-based intervention 4) (BCTs: action planning (1.4), social support (practical) (3.2); [Computer-assisted phone-based interventions lasted between 20 and 60 min. At the end of each intervention session (face-to-face or phone-based) participants rated the quality of the session, were asked if they had any questions, were reminded of the next study appointment, were asked to use the self-regulatory strategies in their daily lives, and were thanked.The final component of the PrevOP-PAP intervention were paper–pencil activity calendars to promote action control and maintenance self-efficacy as well as recovery self-efficacy using BCTs self-monitoring of behavior (2.3), self-monitoring of outcome(s) of behavior (2.4), and feedback on outcome(s) of behavior (2.7) [