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Research Article: Synergistic effect of Tai Chi and transcranial direct current stimulation on memory function in patients with mild cognitive impairment: study protocol for a 2×2 factorial randomised controlled trial

Date Published: 2023-11-21

Abstract:
Introduction Interventions at the mild cognitive impairment (MCI) stage prevent or delay the progression of cognitive decline. In recent years, several studies have shown that physical exercise combined with transcranial direct current stimulation (tDCS) effectively delays the disease and promotes cognitive recovery in patients with MCI. This study aims to determine whether Tai Chi (TC) combined with tDCS can significantly improve memory in patients with MCI compared with TC or tDCS alone. Methods and analysis This clinical trial will use a 2×2 factorial design, enrolling 128 community-dwelling MCI patients, randomly categorised into four groups: TC, tDCS, TC combined with tDCS and the health education group. Outcome measures will include the Chinese Wechsler Memory Scale-Revised, Auditory Verbal Learning Test and Rey-Osterrieth Complex Figure Test. All assessments will be conducted at baseline and 3 months after the intervention. All analyses will use intention-to-treat or per-protocol methods. Ethics and dissemination Ethics approval was obtained from the Ethics Committee of the Affiliated Rehabilitation Hospital of the Fujian University of Traditional Chinese Medicine (2022KY-002–01). The results of the study will be disseminated through peer-reviewed publications and at scientific conferences. Trial registration number ChiCTR2200059316.

Introduction:
The World Alzheimer’s Disease Report 2021, published by Alzheimer’s Disease International, shows that worldwide approximately 55 million people have dementia, which is further predicted to reach 78 million by 2030. Mild cognitive impairment (MCI) is a prodromal symptom of Alzheimer’s disease (AD), with memory impairment as the primary clinical manifestation and a dementia conversion rate of 5–15%. 1 Research suggests that MCI can be considered as a critical time window for the early intervention and rehabilitation…

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