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J GERONTOL A-BIO:在运动前喝甜菜根汁,老化的大脑看起来更年轻

2017-04-19 tree 来宝网

维克森林大学科学家的一项新研究表明,在锻炼之前,饮用甜菜根汁补充剂可使老年人的大脑更有效地进行表现,反映出较年轻的大脑的运作。



维克森林大学科学家的一项新研究表明,在锻炼之前,饮用甜菜根汁补充剂可使老年人的大脑更有效地进行表现,反映出较年轻的大脑的运作。

研究合着者W. Jack Rejeski说:“我们知道,一些研究表明,运动对大脑有积极的影响。“但是,在这次关于高血压老年人的简短培训研究中,我们展示的是,与单独运动相比,添加甜菜根汁补充剂进行运动导致大脑连通性是否与年轻成年人的相似。

虽然这一领域的继续工作需要复制和扩展这些令人兴奋的发现,但它们确实表明,随着年龄的增长,我们所吃的东西对维持我们的大脑健康和功能独立性至关重要。

Rejeski是Thurman D. Kitchin教授,健康与运动科学系行为医学实验室主任。该研究发表在同行评议的老年医学期刊:医学科学杂志上,“甜菜根汁:运动和老化大脑的激素助剂”。他的前研究生之一,梅雷迪思·佩特里(Meredith Petrie)是本文的主要作者。

Rejeski说,这是第一个测试运动和甜菜根汁对运动皮层功能性脑网络和运动皮层和岛间二级关系的综合影响的实验。

该研究包括26名男性和55岁以上的运动员,血压过高,不服用高血压药物。每周三次一共六周,他们在跑步机上进行50分钟中度强烈的步行,前一个小时喝了一种甜菜根汁补充剂Beet-It Sport Shot。一半的参与者接收到了含有560毫克硝酸盐的甜菜, 其他人接受了一种很少的硝酸盐的安慰剂甜菜。

甜菜含有高水平的日粮硝酸盐,在消化时被转化为亚硝酸盐,然后转化为一氧化氮(NO)。NO增加体内的血流量,多项研究表明,它可以改善各年龄段人群的运动表现。

因此,将甜菜根汁与运动相结合可以为大脑提供更多的氧气,并为加强体细胞运动皮质创造出极好的环境。运动后分析显示,尽管研究组在饮用果汁前血液中硝酸盐和亚硝酸盐含量相似,但运动后甜菜根汁组的硝酸盐和亚硝酸盐水平高于安慰剂组。

原始出处:

Petrie M, Rejeski W J, Basu S, et al. Beet Root Juice: An Ergogenic Aid for Exercise and the Aging Brain, The Journals of Gerontology Series A: Biological Sciences and Medical Sciences (2016). DOI: 10.1093/gerona/glw219

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    2017-09-27 sunylz
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    2017-09-02 Boyinsh
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