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Table 1 Behaviour change technique (BCT) within each PEGASO system component

From: Promoting healthy teenage behaviour across three European countries through the use of a novel smartphone technology platform, PEGASO fit for future: study protocol of a quasi-experimental, controlled, multi-Centre trial

Behaviour change technique Operationalisation in the PEGASO system
Companion App
 Information about health consequences, Prompt/Cues, Instruction on how to perform a behaviour News stream UI
 Feedback on behaviour Energy bar
 Self-monitoring of behaviour Interaction with specific UI elements in the News Stream
 Social support Friends UI
 Problem solving Messages and reminders
EDiary App
 Self-monitoring of behaviour, Feedback on behaviour Diversity and Balance index and Food groups consumption
 Prompt/Cues Current target behaviour
 Credible source Companion Avatar
 Instruction on how to perform a behaviour Companion Avatar suggestions
Challenges App
 Feedback on behaviour Feedback on the performance in the challenge
 Prompt/Cues New challenge available
 Self-monitoring of behaviour Challenge status
 Instruction on how to perform a behaviour Challenge description
 Social support Competitive and collaborative challenges
 Goal setting (behaviour) Selection of challenge
 Goal setting (outcome) Selection of challenge
Dashboard App
 Self-monitoring of behaviour, Feedback on behaviour Presentation of performances in activities related to physical activity
Serious Game
 Information about nutrients in food Mini-games (Scavenge mini-game, Research mini-game, NPC mini-game, Laptop mini-game)
 Feedback on behaviour Energy bar, score and points, mini-games, game results
 Feedback on the outcomes of the behaviour Energy bar metaphor
 Credible source Game narrative
 Adding objects to the environment Game narrative
PEGASO Web Portal
 Information about health consequences Blog information and training modules
 Self-monitoring of behaviour Feedback on behaviour ZivaCare module
 Feedback on the outcomes of the behaviour Blog information contact with PEGASO experts and training modules
 Credible source Contact with experts
 Instruction on how to perform a behaviour Blog information and training modules
 Social support Contact with peers, tutors and expert
Report App
 Self-monitoring of behaviour Feedback on behaviour Display of stats about user behaviours
 Social support Provision of the possibility to interact with the family doctor
  1. UI: User interaction