Identifying Persuasive Design Principles and Behavior Change Techniques Supporting End User Values and Needs in eHealth Interventions for Long-Term Weight Loss Maintenance: Qualitative Study

Rikke Aune Asbjørnsen   ^{1, 2, 3} , MSc ;   Jobke Wentzel   ^{1, 4} , PhD ;   Mirjam Lien Smedsrød   ⁵ , MSc ;   Jøran Hjelmesæth   ^{6, 7} , PhD ;   Matthew M Clark   ⁸ , PhD ;   Lise Solberg Nes   ^{3, 8, 9 *} , PhD ;   Julia E W C Van Gemert-Pijnen   ^{1, 10, 11 *} , PhD

¹ Centre 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 Research Group IT Innovations in Health Care, Windesheim University of Applied Sciences, Zwolle, Netherlands

⁵ Collaborative Care Unit, Sørlandet Hospital Trust, Kristiansand, Norway

⁶ Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway

⁷ Department of Endocrinology, Morbid Obesity and Preventive Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway

⁸ Department of Psychiatry & Psychology, Mayo Clinic, College of Medicine & Science, Rochester, MN, United States

⁹ Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway

¹⁰ University Medical Center Groningen, Groningen, Netherlands

¹¹ University of Waterloo, Waterloo, ON, Canada

*these authors contributed equally