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| Author, year (country) | Trials (subjects) | Intervention group | Control group | Quality assessment | Main results |
|
| Liu et al., 2021 (China) [27] | 10 (580) | TC, TC + CT | CT and daily life activities | Cochrane criteria | TC may have a positive effect on cognitive function improvement in middle-aged and elderly patients with cognitive impairment |
| Yang et al., 2020 (China) [28] | 11 (1,061) | TC, TC + CT | CT and daily life activities | Physiotherapy Evidence Database scale | TC may be beneficial in improving cognitive function in older adults with MCI. However, good RCTs need to be rigorously designed and reported |
| Gu et al., 2021 (China) [29] | 9 (827) | TC, TC + CT | CT and daily life activities | Cochrane criteria | Evidence that supports the efficacy of TC in older adults with cognitive impairment is limited. Tai Chi appears to be a safe exercise that leads to better changes in cognitive function scores |
| Lin et al., 2021 (China) [30] | 7 (1,265) | TC, TC + CT | CT and daily life activities | Cochrane criteria | This meta-analysis demonstrates that TC has a positive clinical effect on cognitive function (overall cognitive function, memory and learning, and executive function) and physical abilities in older adults with MCI, and provides a feasible approach for MCI management |
| Cai et al., 2020 (China) [31] | 19 (1,970) | TC and TC + CT | CT and daily life activities | Physiotherapy Evidence Database scale | TC is a promising approach to improve overall cognitive function, memory, executive function, attention, and language fluency in older adults with cognitive impairment |
| Li et al., 2021 (China) [32] | 11 (1,234) | TC | CT and daily life activities | Cochrane criteria | TC has a certain positive effect on the cognitive function of MCI patients, but the research on the rehabilitation effect should still be increased |
| Zhang et al., 2017 (China) [33] | 3 (378) | TC | CT and daily life activities | Cochrane criteria | TC exercise has a good effect on improving the cognitive function of the elderly with cognitive impairment |
| Zhang et al., 2020 (China) [34] | 7 (1,068) | TC | CT and daily life activities | Cochrane criteria | TC can improve memory and visuospatial function in the elderly with mild cognitive impairment, but there is no significant improvement in indicators such as overall cognitive function, executive ability, language fluency, and depression |
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