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A Theory- and Evidence-Based Digital Intervention Tool for Weight Loss Maintenance (NoHoW Toolkit): Systematic
Marta M Marques1,2, Marcela Matos3, Elina Mattila4
1CIPER -Interdisciplinary Centre for the Study of Human Performance, Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal.
Journal of Medical Internet Research
|December 6, 2021
Summary
This study developed the Navigating to a Healthy Weight (NoHoW) Toolkit, a digital tool for long-term weight management. User testing and a randomized controlled trial evaluated its effectiveness in promoting sustained weight loss.
Area of Science:
- Behavioral science
- Digital health
- Obesity research
Background:
- Weight loss maintenance is challenging despite short-term program success.
- Digital technologies offer scalable, low-cost behavior change interventions.
- The Navigating to a Healthy Weight (NoHoW) project aimed to create a digital toolkit for sustained weight management.
Purpose of the Study:
- Describe the development of the NoHoW Toolkit, including logic models, content, and specifications.
- Report on user testing results for the NoHoW Toolkit.
- Evaluate the toolkit's potential for long-term weight management.
Main Methods:
- Systematic development using theory-based logic models and behavior change techniques.
- Translation into a web-based app (NoHoW Toolkit) with technical development.
- User evaluation and refinement of the toolkit through a large-scale international randomized controlled trial.
Main Results:
- The toolkit features web-based tools and digital tracking device integration (smart scales, activity trackers).
- It includes 34 sessions across 15 modules over 4 months, covering weight, physical activity, and dietary behaviors.
- Interventions focused on motivation, self-regulation, and emotion regulation, with data monitoring for weight, steps, diet, mood, and sleep.
Conclusions:
- A systematic, theory- and evidence-based approach with user testing enhances digital behavior change solutions.
- The NoHoW Toolkit development provides a model for improving sustained weight management interventions.
- The 2x2 factorial trial design uniquely examined the separate and interactive effects of motivation, self-regulation, and emotion regulation on weight loss maintenance.
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