草适度提高了老年人的认知和心血管健康
Kristin Delaney1, Michelle Tsang1, Mark Kern1
1School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA, USA.
概括
每天摄入草粉可以改善老年人的认知处理速度和心血管健康. 这项研究强调了冷干燥草对认知功能和心脏健康的好处.
科学领域:
- 营养科学 营养科学
- 老年学是指老年学的学科.
- 心血管健康 心血管健康
背景情况:
- 草消费与由于营养和抗氧化剂含量而导致的认知和心血管益处有关.
- 每天摄入冷干燥的草粉被调查其潜在的健康影响.
研究的目的:
- 评估每日冷干燥草粉 (26g/d) 对健康老年人的认知表现和心血管健康的影响.
- 为了比较草补充剂与安慰剂对照的健康结果.
主要方法:
- 这是一项随机,交叉,双盲,安慰剂控制的试验,涉及35名健康的老年人 (平均年龄72岁).
- 参与者每天摄入26克冷干燥的草粉或对照粉,持续8周,然后进行4周的洗期.
- 用国家卫生研究院工具箱评估认知表现,心血管测量包括血压和腰围.
主要成果:
- 随着草的消费,认知处理速度显著改善 (p < 0.001).
- 随着草的摄入,随着时间的推移,静脉血压降低了 (p = 0.044),腰围减少了 (p = 0.043).
- 对照组的血清甘油三水平增加,但与草消费并非如此. 总抗氧化能力随着草摄入量增加 (p = 0.047) 并在对照阶段下降 (p = 0.032).
结论:
- 每天摄入26克冷干草可以提高认知处理速度.
- 草消费通过降低缩血压和增加抗氧化能力,对心血管风险因素产生积极影响.
- 这些发现表明,冷干燥的草可以促进认知功能,改善健康个体的心血管健康标志物.
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