Abstract: Although a great importance has been attached to the pathological mechanisms and risk factors of cognitive impairment in the past decades, the effective solutions to treat or prevent cognitive impairment have not been found so far. So more and more studies focus especially on the protective factors of cognitive impairment. Previous studies have found that activities engagement have a positive effect on cognitive impairment, which maybe is an important protective factor of cognitive impairment. However, the impact mechanism of activities engagement on the cognitive impairment and the interaction between different activities engagement are still unknown. The relationship between cognitive impairment and different activities engagements or their interactions should be further studied, and the common factors of the activities engagement in the protective effect of cognitive impairment need to be addressed.

Key words: activities engagement, cognitive impairment, cognitive aging, dementia