BrainFit

BrainFit was an observational cross-sectional study conducted in older adults that aimed to (i) assess acceptability, usability, and user satisfaction with the Xiaomi Mi Band 2® in Portuguese community-dwelling older adults in a real-world context; (ii) compare physical activity objective estimates obtained with the wearable activity tracker with data obtained from self-report questionnaires; and (iii) explore the associations between objectively measured PA and brain structure and function.

The results have shown that Xiaomi Mi Band® has an excellent level of acceptability, usability, and satisfaction among older adults, suggesting that this device is suitable for this population. Moreover, we found a large variation between subjective and objectively measured physical activity. Finally, the findings highlighted a positive correlation between physical activity, hippocampus volume, and higher functional connectivity.

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