Planning, developing, and pilot testing a mobile health promotion program to prevent type 2 diabetes after gestational diabetes mellitus

Potzel, Anne Lotte (2021): Planning, developing, and pilot testing a mobile health promotion program to prevent type 2 diabetes after gestational diabetes mellitus. Dissertation, LMU München: Medizinische Fakultät

Abstract

Background: Gestational diabetes mellitus (GDM) is associated with an increased risk for type 2 diabetes (T2D) and related cardiometabolic disturbances. A healthy lifestyle with sufficient physical activity, a balanced nutrition, and psychosocial wellbeing decreases the risk of developing these conditions in the years following delivery. Current prevention programs for women after GDM insufficiently address the needs of a flexible, accessible, and practical tool for daily life in this target group. The aim of this dissertation project was to create a theory- and evidence-based scalable mobile health (mHealth) application that fulfils both academic and industrial standards, supports behavior change, and addresses the specific needs of women post-GDM. Methods: The Intervention Mapping approach was implemented to structure the development process. In the scope of this thesis, Intervention Mapping Steps 1 to 4 were applied as blueprint and analytical tool for planning, developing, and pilot testing the smartphone-based TRANGLE program to prevent T2D and related cardiometabolic disturbances in women post-GDM. In the Steps 1 to 3, we designed a theory- and evidence-based intervention model. In Step 4, we cooperated with industry to secure a high technological standard when translating the model into a practical intervention based on a smartphone app. For the associated user study and the clinical pilot trial, we used a mixed methods design based on validated questionnaires on user acceptance and lifestyle behavior, user logs, think alouds with semi-structured interviews, nutrition protocols, and clinical assessments. Results: The resulting TRIANGLE program is among the first mHealth apps for personalized stepwise habit change in the areas of physical activity, nutrition, and psychosocial wellbeing. The interactive app allows for self-pacing, addresses 11 behavioral determinants, and offers 39 behavior change methods to support individual lifestyle change. An associated online platform for healthcare practitioners allows for human coaching while a unique challenge system fosters habit change and education. Once a beta-version of the app and the coaching platform was available, the iterative development process comprised a user study with women post-GDM, followed by adaptations before the full program production. Lastly, a German multicenter randomized controlled pilot trial of the TRIANGLE program indicated first clinical effects for behavior change after six months of intervention. Women post-GDM showed a high acceptance and a high perceived impact of the program on their behavior. Conclusions: Using the Intervention Mapping approach, we developed an innovative mHealth solution for women post-GDM. The novel TRIANGLE program has the potential to prevent cardiometabolic disease as an easy to deliver technological support for behavior change. The program needs to be further refined and tested at a large scale. Intervention Mapping Steps 5 and 6 may support this implementation and evaluation process.

• Dokumententyp: Dissertationen (Dissertation, LMU München)
• Themengebiete: 600 Technik, Medizin, angewandte Wissenschaften ; 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
• Fakultäten: Medizinische Fakultät
• Sprache der Hochschulschrift: Englisch
• Datum der mündlichen Prüfung: 23. Februar 2021
• 1. Bericht­erstatter:in: Lechner, Andreas