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Dual-task Zumba Gold for improving the cognition of people with mild cognitive impairment: a pilot randomized controlled trial
Parial LL, Kor PPK, Sumile EF, Leung AYM
The Gerontologist 2023 Aug;63(7):1248-1261
clinical trial
7/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: No; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

BACKGROUND AND OBJECTIVES: Integrating mental activities with physical exercises (eg, dual-tasking) may potentially improve cognition in older adults and people with mild cognitive impairment (MCI). This study investigated the preliminary efficacy of a new intervention called dual-task Zumba Gold (DTZ) on people with MCI to guide an adequately-powered full-scale trial. RESEARCH DESIGN AND METHODS: This is a two-arm pilot randomized controlled trial with 60 people with MCI assigned to a 12-week DTZ intervention or control group (health education). We hypothesized that DTZ would facilitate significant improvements in global cognition (primary outcome) and other psychological/physical measures at post-intervention (T1) and 6-week follow-up (T2). Generalized estimating equations with intention-to-treat approach were used to evaluate intervention effects. Post-intervention qualitative interviews explored the participants' program perceptions. RESULTS: Fifty-one participants completed the study, with no adverse events reported. DTZ participants showed significant improvements in global cognition (p < 0.001, d = 0.75 to 0.78), executive function (p < 0.001, d = 0.28 to 0.33), immediate recall (p < 0.001, d = 0.50 to 0.54), delayed recall (p = 0.003, d = 0.66 to 0.71), quality of life (p = 0.027, d = 0.59 to 0.63) and mobility (p = 0.005, d = 0.53 to 0.56) at T1 and T2. There were non-significant changes in working memory, depressive symptoms, blood pressure, body mass index, and waist circumference. Participants conveyed intervention acceptability, including challenges/barriers, enablers, and future recommendations. DISCUSSION AND IMPLICATIONS: DTZ is a potentially feasible intervention for people with MCI that may improve cognition, quality of life, and mobility. A full-scale trial is recommended for confirmatory evaluation.
Copyright the Gerontological Society of America. Reproduced by permission of the publisher.

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