在连续几天的高能量需求期间,能量状态会改变肠道功能和肠道微生物群
Cassandra Suther1,2, Adrienne Hatch-McChesney1, Jillian T Allen1
1Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts, United States.
在高体力活动期间保持能量平衡可以防止肠道透性增加和过渡时间增加. 防止能量赤字支持肠道微生物群的丰富性,这表明饮食摄入在强烈活动期间有益于肠道健康.
科学领域:
- 生理学 生理学 生理学
- 微生物学 微生物学
- 营养科学 营养科学
背景情况:
- 主体-肠道微生物群的相互作用对肠道功能至关重要,特别是在高能量需求期间.
- 在持续高能源需求期间,能源状况 (能源赤字与平衡) 对这些相互作用的影响尚不清楚.
研究的目的:
- 为了研究能量状态对肠道功能和肠道微生物群在高体力活动期间的影响.
- 为了确定防止能源赤字是否会减轻对肠道的负面影响.
主要方法:
- 十名健康的男性接受了与基线测量进行交叉研究.
- 随后有两个72小时的高体力活动周期:一个是显著能量赤字 (DEF),一个是维持能量平衡 (BAL).
- 测量包括肠道透性,传输时间,便微生物群组成和基因含量,短链脂肪酸 (SCFA) 和胃肠道症状.
主要成果:
- 与能量平衡 (BAL) 相比,在能量赤字 (DEF) 条件下,肠道透率显著更高.
- 与BAL和基线 (BL) 相比,DEF期间结肠过渡时间较慢.
- 与DEF相比,便微生物群物种丰富度在BAL期间减少,但在研究后这种差异没有持续.
结论:
- 增加饮食摄入量以防止能量赤字可能有利于肠道健康和功能在短期的高能量需求.
- 在高体力活动期间,尽量减少能量赤字对于维持胃肠功能至关重要.
- 虽然能量状况暂时影响肠道微生物群丰富,但它不会影响社区的功能潜力.
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