title: Development of a web-based and mobile app to support physical activity in individuals with rheumatoid arthritis: results from the second step of a co-design process.
abstract: BACKGROUND
  Long-term adherence to physical activity recommendations remains challenging for most individuals with rheumatoid arthritis (RA) despite evidence for its health benefits.
  
  
  OBJECTIVE
  The aim of this study was to provide basic data on system requirement specifications for a Web-based and mobile app to self-manage physical activity. More specifically, we explored the target user group, features of the future app, and correlations between the system requirements and the established behavior change techniques (BCTs).
  
  
  METHODS
  We used a participatory action research design. Qualitative data were collected using multiple methods in four workshops. Participants were 5 individuals with RA, a clinical physiotherapist, an officer from the Swedish Rheumatism Association, a Web designer, and 2 physiotherapy researchers. A taxonomy was used to determine the degree of correlation between the system requirements and established BCTs.
  
  
  RESULTS
  Participants agreed that the future Web-based and mobile app should be based on two major components important for maintaining physical activity: (1) a calendar feature for goal setting, planning, and recording of physical activity performance and progress, and (2) a small community feature for positive feedback and support from peers. All system requirements correlated with established BCTs, which were coded as 24 different BCTs.
  
  
  CONCLUSIONS
  To our knowledge, this study is the first to involve individuals with RA as co-designers, in collaboration with clinicians, researchers, and Web designers, to produce basic data to generate system requirement specifications for an eHealth service. The system requirements correlated to the BCTs, making specifications of content and future evaluation of effectiveness possible.
authors: Division of Physiotherapy, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden. asa.revenas@ki.se.
authors: Åsa
authors: http://orcid.org/0000-0003-3419-9292
authors: Å
authors: Revenäs
authors: Christina H
authors: http://orcid.org/0000-0001-6738-4879
authors: CH
authors: Opava
authors: Cathrin
authors: http://orcid.org/0000-0001-9997-3221
authors: C
authors: Martin
authors: Ingrid
authors: http://orcid.org/0000-0002-2068-4708
authors: I
authors: Demmelmaier
authors: Christina
authors: http://orcid.org/0000-0003-2923-9034
authors: C
authors: Keller
authors: Pernilla
authors: http://orcid.org/0000-0002-7999-6087
authors: P
authors: Åsenlöf
keywords: Internet intervention; behavior change techniques; eHealth; participatory design; physical activity; rheumatoid arthritis