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. 2025 Aug 25;27:e64862. doi: 10.2196/64862

Table 3. Themes of future (research) directions.

Main category and subcategories Mentioned by
Development in early stage of maturity
Need for (further) prototyping (ie, design adjustments) [34,35,43-45,47,57,60,62,63,65,69,undefined,undefined]
Add personalization (ie, tailored approaches to enhance engagement or personalized presentation of intervention) [35,53,60,62,63]
Applying technological improvements (ie, improving reliability and ensuring product updates) [36,55,72]
Investigate gamification of intervention programs [37]
Develop via co-creation and co-design with end users [40,63]
Development in early stage of evaluation
Need for feasibility research (ie, contextual research) [42,68]
Improve usability via user testing (ie, validation, user experience testing, assess over time) [41,55,59,63,71]
Adjust protocol/refinement of training material [51,61]
Need for efficacy testing [40,46,47,50,52,54,58,59]
Development in the mid stage of maturity
Perform implementation research (ie, long-term adoption or test in health care settings) [37,44,53,56,60,64,71]
Development in the mid stage of evaluation
Need for effectiveness testing [45,46,48,56,60,65-67,71,undefined,undefined]
Development in advanced stage of maturity
Test in multiple settings (ie, comparing intervention settings) [50]
Diversity, equity, and inclusivity
Increase cross-cultural relevance (ie, validating cross-cultural relevance) [35,38,41,55,63,70]
Ensure diverse study population (ie, representative study samples to assess accessibility and acceptability) [36,39,41,42,44,50,55,56,58,63,65,72]
Study advancements
Standardize participant recruitment criteria [41]
Conduct large-scale studies [34,38-40,51,56-58,67,undefined,undefined,undefined,undefined]
Apply methodological improvements (eg, small sample for inferential statistics; broad definition of mild cognitive impairment) [50,54]
Use different analyses (eg, explore age-related differences; assess effect on global motor activities and possible negative mental effects due to uncontrolled cognitive training activities) [49,50,57,58]
Outcome measure assessment (ie, develop methods to assess success) [37]
Retention (ie, improve participant retention) [36,40,41]
Conduct longitudinal studies [37,41,46,51,55,62,66,72]
Address study limitations (eg, evaluate and refine intervention strategies; prioritize at-risk populations; address bias) [38,40,58]
Conduct randomized controlled trial [38,39,52,56,57,59,62]