抹茶绿茶粉对社区老年人认知功能的影响。
Effects of Matcha Green Tea Powder on Cognitive Functions of Community-Dwelling Elderly Individuals.
机构信息
Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8562, Japan.
Community Health Promotion Laboratory, Mitsui Fudosan, Co., Ltd., Kashiwa 277-8519, Japan.
出版信息
Nutrients. 2020 Nov 26;12(12):3639. doi: 10.3390/nu12123639.
Matcha Green Tea Powder contains a variety of active ingredients beneficial to health, such as tea catechins, lutein and vitamin K. It is also known that these ingredients confer benefits upon cognitive functions of elderly people. Therefore, we aimed to investigate the relationship between a daily supplementation of Matcha and the change in cognitive functions of community-dwelling elderly people. A randomized, double-blind, placebo-controlled 12-week trial was performed. Sixty-one participants were recruited and randomly assigned to receive test drink containing 3g powder from fresh Matcha or placebo powder per day. Changes in cognitive function were assessed utilizing a psychometric test battery. Daily food intake was assessed by a Brief-type Self-administered Diet History Questionnaire (BDHQ). In the gender-specific analysis, a significant cognitive enhancement was observed in the Montreal Cognitive Assessment (MoCA) score in the active group of women. In dietary analysis, we found a significant inverse correlation between consumption of vitamin K in daily diet, excluding test drinks, and change in MoCA. The present study suggests that daily supplementation of Matcha Green Tea Powder has protective effects against cognitive decline in community-dwelling elderly women.
抹茶粉含有多种对健康有益的活性成分，如儿茶素、叶黄素和维生素 K。已知这些成分对老年人的认知功能有益。因此，我们旨在研究每天补充抹茶与社区居住的老年人认知功能变化之间的关系。进行了一项随机、双盲、安慰剂对照的 12 周试验。招募了 61 名参与者，并随机分配每天接受含有 3 克新鲜抹茶粉的测试饮料或安慰剂粉。利用心理测试工具包评估认知功能的变化。通过简要型自我管理饮食史问卷（BDHQ）评估每日食物摄入量。在性别特异性分析中，在女性活跃组中观察到蒙特利尔认知评估（MoCA）评分的显著认知增强。在饮食分析中，我们发现除测试饮料外，日常饮食中维生素 K 的摄入量与 MoCA 的变化呈显著负相关。本研究表明，每天补充抹茶粉对社区居住的老年女性认知能力下降具有保护作用。
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