Table 2

Themes and subthemes identified in the interviews of the facilitators (+) and barriers (−) in initial and sustained platform use 

Initial platform useSustained platform use
User-friendliness for older people
  • Layout: simplicity, attractiveness (+/−)

  • Technical difficulties (−)

  • Perceived computer literacy (+/−)

Coach: the basis for a relationship of trust
  • Inperson baseline consultation (+)

  • Timing and content of messages (+)

Usefulness and perceived benefit of the intervention
  • Affinity with platform functionalities (including self-management) (+/−)

  • Awareness of cardiovascular risk (+/−)

  • Motivation for lifestyle change with increasing age (−)

Coach: long-term relationship of trust
  • Personal connection (+)

  • Content of messages (+/−)

  • Continuity of person (−)

Reactive use of the platform* (+)
Lifestyle change: expectations and experiences
  • Expectations of platform (+/−)

  • Benefits of lifestyle changes (+)

  • Setting a goal is burdensome (−)

  • Monitoring health (+)

Incorporation into daily routine
  • Incorporation into daily routine (+/−)

  • Social (partner) support (+)

  • Continuity of care (+/−)

  • Time investment (+/−)

Perceived lack of change in the platform (+/-)
  • *Reactive use indicates the preference of participants to use the platform in response to automatic or personal reminders.