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Development of an mHealth Intervention for Reducing Sedentary Behavior in Older Adults: Delphi Study
Siqing Chen1,2,3,4, Xiaofei Nie1, Jiekai Yang1
1Nursing Department, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Road, Hangzhou, Zhejiang, 310016, China, 86 13429168765.
Journal of Medical Internet Research
|June 11, 2026
Summary
This study developed a consensus-driven mobile health (mHealth) intervention to reduce sedentary behavior in older adults. The program targets capability, opportunity, and motivation to promote healthier lifestyles and combat chronic diseases.
Area of Science:
- Gerontology and Public Health
- Behavioral Science and Health Promotion
- Digital Health Interventions
Background:
- Sedentary behavior is a significant public health issue in aging populations, linked to chronic diseases and mortality.
- Older adults spend considerable time sitting (up to 13 hours daily), increasing health risks.
- Existing mobile health (mHealth) interventions lack systematic development for sedentary behavior in older adults.
Purpose of the Study:
- To develop an evidence-based mHealth intervention program tailored for reducing sedentary behavior in older adults.
- To utilize the Delphi consensus method for expert-driven refinement of the intervention.
Main Methods:
- A preliminary mHealth intervention was created using the Behavior Change Wheel framework, literature reviews, and qualitative/quantitative data.
- Two rounds of Delphi surveys were conducted with 16 multidisciplinary experts to refine the intervention.
- Consensus was defined by specific importance scores and coefficients of variation.
Main Results:
- High expert engagement (100% response rates) and authority were achieved in both Delphi rounds.
- A total of 27 intervention items were finalized, focusing on capability, opportunity, and motivation.
- The finalized intervention addresses key behavioral determinants of sedentary behavior in older adults.
Conclusions:
- A theoretical framework-based, consensus-driven mHealth intervention for older adults' sedentary behavior has been successfully developed.
- The intervention integrates the Behavior Change Wheel with expert validation, offering a holistic approach.
- This provides a foundation for future research on mHealth interventions for aging populations.
