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A pilot feasibility randomized controlled trial on combining mind-body physical exercise, cognitive training, and nurse-led risk factor modification to reduce cognitive decline among older adults with mild cognitive impairment in primary care |
Xu Z, Zhang D, Lee ATC, Sit RWS, Wong C, Lee EKP, Yip BHK, Tiu JYS, Lam LCW, Wong SYS |
PeerJ 2020 Sep 7;8:e9845 |
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: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
OBJECTIVES: To examine the feasibility and preliminary effectiveness of (1) combining cognitive training, mind-body physical exercise, and nurse-led risk factor modification (CPR), (2) nurse-led risk factor modification (RFM), and (3) health advice (HA) on reducing cognitive decline among older adults with mild cognitive impairment (MCI). METHODS: It was a 3-arm open-labeled pilot randomized controlled trial in the primary care setting in Hong Kong. Nineteen older adults with MCI were randomized to either CPR (n = 6), RFM (n = 7), or HA (n = 6) for 6 months. The primary outcome was the feasibility of the study. Secondary outcomes included the Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog), the Montreal Cognitive Assessment Hong Kong version (HK-MoCA), the Clinical Dementia Rating (CDR), the Disability Assessment for Dementia (DAD), quality of life, depression, anxiety, physical activity, health service utilization, and diet. RESULTS: Nineteen out the 98 potential patients were recruited, with a recruitment rate of 19% (95% CI 12 to 29%, p = 0.243). The adherence rate of risk factor modification was 89% (95% CI 65 to 98%, p = 0.139) for CPR group and 86% (95% CI 63 to 96%, p = 0.182) for RFM group. In the CPR group, 53% (95% CI 36 to 70%, p = 0.038) of the Tai Chi exercise sessions and 54% (95% CI 37 to 71%, p = 0.051) of cognitive sessions were completed. The overall dropout rate was 11% (95% CI 2 to 34%, p = 0.456). Significant within group changes were observed in HK-MoCA in RFM (4.50 +/- 2.59, p = 0.008), cost of health service utilization in CPR (-4,000, quartiles -6,800 to -200, p = 0.043), fish and seafood in HA (-1.10 +/- 1.02, p = 0.047), and sugar in HA (2.69 +/- 1.80, p = 0.015). Group x time interactions were noted on HK-MoCA favoring the RFM group (p = 0.000), DAD score favoring CPR group (p = 0.027), GAS-20 favoring CPR group (p = 0.026), number of servings of fish and seafood (p = 0.004), and sugar (p < 0.001) ate per day. CONCLUSIONS: In this pilot study, RFM and the multi-domain approach CPR were feasible and had preliminary beneficial effects in older adults with MCI in primary care setting in Hong Kong. TRIAL REGISTRATION: Chinese Clinical Trial Registry (ChiCTR1800015324).
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