Effectiveness of the online-based comprehensive cognitive training application, Smart Brain, for community-dwelling older adults with dementia: a randomized controlled trial.

The sample was small, with 60 randomized participants, and the study was done in one public health center in Korea, so it may not apply to other settings. Participants were selected from dementia care subjects and excluded for hearing or sight difficulties, neuropsychiatric problems, substance abuse, or recent cognitive intervention, so the findings may not apply to people with those difficulties. The intervention was a bundle: tablet app, blood-pressure monitor, glucose meter, weight scale, smartwatch, training, and several health and social activities; the control group also received devices, training, and leaflets. The study cannot show which component mattered. The trial lasted 8 weeks, and the authors note the period was short, so long-term effects are unknown. Caregiver burden was not measured for all participants when the main caregiver changed or could not visit the center. No dropouts were reported, but devices were sometimes disconnected or lost and needed repair, which may reflect high support rather than real-world usability.

The authors declared no conflicts of interest. The study was supported by a Korea Health Technology R&D Project grant through the Korea Health Industry Development Institute, funded by the Ministry of Health and Welfare, Republic of Korea.

Do not conclude that the Smart Brain app alone caused the improvements. The intervention also included a tablet, blood-pressure monitor, glucose meter, weight scale, smartwatch, training, cognitive games and videos, music, social networking, real-time classes, meal records, nutrition videos, and walking goals. The control group received the same devices, basic training, and leaflets. This design cannot separate the contribution of any single component.