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Background: Many neuropsychiatric symptoms in persons of MCI cause negative impacts on their HRQOL. There is limited HRQOL research investigating the effect of Tai Chi on older people with MCI. Objective: To determine the effectiveness of a Tai Chi program in enhancing health‐related quality of life (HRQOL) among community‐dwelling older people with mild cognitive impairment (MCI) in Hong Kong. Methods: This was a quasi‐experimental study using a nonequivalent control group (CG) design. Four social centres for older people participated in the study, of which two centres were randomised for Tai Chi intervention and the other two were treated as control. Participants in the intervention group (IG) were arranged for a 1‐hour Tai Chi class twice weekly for 16 weeks, whereas participants in the CG were advised to join various recreational activities in the social centres as usual. For outcome evaluation, the Chinese version of the Short Form‐12 Health Survey‐Standard 1 (SF‐12) was employed to assess participants' perceived HRQOL. Results: One hundred and sixty participants were recruited (IG = 80, CG = 80). Data were collected at baseline (T0) and 16‐week post‐intervention (T1).The IG reported significant improvement in the physical health component (PCS) (p =.036), the mental health component (MCS) (p =.014), as well as several subscales of SF‐12, namely, the role‐physical (RP) (p =.044), the bodily pain (BP) (p <.001) and the vitality (VT) (p =.004) subscales, in comparison with the CG. Conclusion: The current study results extended our knowledge about Tai Chi of which the mind‐body exercise could enhance the physical and psychosocial well‐being in older people with MCI. Implications for practice: The findings have the potential to inform health and social care professionals to promote Tai Chi in community settings, as it may represent a non‐intensive and age‐fitting strategy to promote HRQOL in older people with MCI. Trial registration: NCT03404765 (Retrospectively registered January 19, 2018). [ABSTRACT FROM AUTHOR]

Background: Cognitive impairment places older adults at high risk of functional disability in their daily-life activities, and thus affecting their quality of life. This study aimed to examine the effects of Tai Chi on general cognitive functions and instrumental activities of daily living (IADL) in community-dwelling older people with mild cognitive impairment (MCI) in Hong Kong.Methods: The study adopted a multi-site nonequivalent control-group pretest-posttest design. 160 community-dwelling older people, aged ≥60, with MCI, from four community elderly centers participated in the study. The intervention group (IG, n = 80) received training in the Yang-style simple form of Tai Chi, at a frequency of two lessons per week for 16 weeks. Each lesson lasted for one hour. The control group (CG, n = 80) had no treatment regime and joined different recreational activity groups in community centers as usual within the study period. Outcome measures included measures of global cognitive status and IADL. The Chinese version of the Mini-Mental State Examination (CMMSE) was used for global cognitive assessment. The Hong Kong Chinese version of Lawton's Instrumental Activities of Daily Living (IADL-CV) was used to assess the participants' IADL levels. General Estimating Equations (GEE) was used to examine each of the outcome variables for the two groups at the two study time points (the baseline and at the end of the study). Meanwhile, minimum detectable change (MDC) was calculated to estimate the magnitude of changes required to eradicate the possibility of measurement error of outcome measures.Results: Seventy four participants in the IG and 71 participants in the CG completed the study. With adjustments for differences in age, education, marital status and living conditions, the findings revealed that the participants in the IG scored significantly better on the CMMSE test (P = 0.001), and the instrumental ADL questionnaire (P = 0.004). However, those scores changes did not exceed the limits of the respective MDCs in the study, the possibility of measurement variation due to error could not be excluded.Conclusion: Tai Chi may be an effective strategy to enhance cognitive health and maintain functional abilities in instrumental ADL in older people with MCI.Trial Registration: NCT03404765 (Retrospectively registered January 19, 2018). [ABSTRACT FROM AUTHOR]