Persuasive System Design Principles and Behavior Change Techniques to Stimulate Motivation and Adherence in Electronic Health Interventions to Support Weight Loss Maintenance: Scoping Review

Rikke Aune Asbjørnsen   ^{1, 2, 3} , MSc ;   Mirjam Lien Smedsrød   ⁴ , MA ;   Lise Solberg Nes   ^{3, 5, 6} , PhD ;   Jobke Wentzel   ^{1, 7} , PhD ;   Cecilie Varsi   ⁸ , PhD ;   Jøran Hjelmesæth   ^{9, 10} , PhD ;   Julia EWC van Gemert-Pijnen   ^{1, 11, 12} , PhD

¹ Center for eHealth and Wellbeing Research, Department of Psychology, Health, and Technology, University of Twente, Enschede, Netherlands

² Research and Innovation Department, Vestfold Hospital Trust, Tønsberg, Norway

³ Department of Digital Health Research, Division of Medicine, Oslo University Hospital, Oslo, Norway

⁴ Norwegian Regional Advisory Unit on Patient Education, Sørlandet Hospital Trust, Kristiansand, Norway

⁵ Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway

⁶ Department of Psychiatry & Psychology, Mayo Clinic, Rochester, MN, United States

⁷ Saxion University of Applied Sciences, Deventer, Netherlands

⁸ Center for Shared Decision Making and Collaborative Care Research, Division of Medicine, Oslo University Hospital, Oslo, Norway

⁹ Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway

¹⁰ Department of Endocrinology, Morbid Obesity, and Preventive Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway

¹¹ Department of Health Psychology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands

¹² University of Waterloo, Waterloo, ON, Canada