Dietary Nitrate Supplementation and Exercise-Related Performance.
Dietary Nitrate Supplementation and Exercise-Related Performance.
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硝酸饮食补充和与运动有关的表现。
DOI：
10.1097/nt.0000000000000431
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发表时间：
2020-09
期刊：
影响因子：
--
通讯作者：
Carter SJ
中科院分区：
文献类型：
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作者：
Baranauskas MN;Coggan AR;Gruber AH;Altherr CA;Raglin JS;Carter SJ
在过去的十年里，人们对补充硝酸盐(NO3−)以改善运动相关表现的效用越来越感兴趣。食用后，饮食中的N3−可以还原为一氧化氮，一种参与血管扩张、线粒体呼吸和骨骼肌收缩功能等多种生理活动的自由基气体。新出现的证据表明，饮食中补充3号−对耐力运动的影响很小，但却很重要，这是通过增强组织氧合和活跃骨骼肌的代谢效率的综合作用实现的。有进一步的证据表明，饮食中的No3−通过改变钙的供应和敏感性对骨骼肌内的收缩机制产生直接影响。甜菜根汁产品中硝酸盐含量的响应异质性和相当大的变异性影响了饮食中N3−对运动能力的有效性，因此应该考虑剂量和产品质量，以及训练史、性别和个体特有的特征。
Over the last decade, there has been a growing interest in the utility of nitrate (NO3−) supplementation to improve exercise-related performance. After consumption, dietary NO3− can be reduced to nitric oxide, a free radical gas involved in numerous physiological actions including blood vessel vasodilation, mitochondrial respiration, and skeletal muscle contractile function. Emerging evidence indicates that dietary NO3− supplementation has a small but nevertheless significant beneficial effect on endurance performance through the combined effects of enhanced tissue oxygenation and metabolic efficiency in active skeletal muscle. There is further evidence to suggest that dietary NO3− exerts a direct influence on contractile mechanisms within the skeletal muscle through alterations in calcium availability and sensitivity. Response heterogeneity and sizeable variability in the nitrate content of beetroot juice products influence the effectiveness of dietary NO3− for exercise performance, and so dosing and product quality, as well as training history, sex, and individual-specific characteristics, should be considered.