在经历了10周不同的饮食模式和同时进行的训练后,探索耐力训练的跑步者的非目标代谢格局
Anna Maria Kripp1,2,3, Ammar Tahir4,5, Agnes Draxler1,2,6
1University of Vienna, Department of Nutritional Sciences, Vienna, Austria.
Journal of the International Society of Sports Nutrition
|July 23, 2025
概括
与低血糖指数 (LOW-GI) 和高血糖指数 (HIGH-GI) 的饮食相比,低碳水化合物,高脂肪 (LCHF) 饮食显著改变了跑步者的血脂和代谢物. LCHF增强脂肪代谢,而LOW-GI可能会改善代谢灵活性.
科学领域:
- 运动营养 运动营养
- 代谢学 代谢学 代谢学
- 运动生理学 运动生理学
背景情况:
- 耐力运动的表现传统上是通过富含碳水化合物的饮食来优化.
- 低碳水化合物,高脂肪 (LCHF) 等替代饮食因其对代谢灵活性和表现的潜在影响而受到关注.
- 了解不同饮食策略的代谢影响对于优化运动结果至关重要.
研究的目的:
- 研究LCHF,Low-GI和HIGH-GI饮食与耐力运动对休跑者的新陈代谢资料的综合影响.
- 分析不同的血糖指数饮食如何影响运动期间的代谢调节和基质利用.
- 为了比较由LCHF和传统的GI饮食引起的代谢变化.
主要方法:
- 49名休跑步者被随机分配到三个组:低GI (n=16),高GI (n=16) 或LCHF (n=17) 10周.
- 所有组都接受了相同的耐力训练干预.
- 在干预之前和之后,通过液态染色体质谱分析分析了禁食血样本,使用非向的代谢分析.
主要成果:
- 在LCHF饮食显著影响了血脂质,其中179个代谢物发生了变化,而低GI (111) 和高GI (139) 组的变化较少.
- 脂和脂是所有组中最丰富的改变代谢物.
- 在饮食干预中观察到糖脂,肉,氨基酸和碳酸的差异调节.
结论:
- 低脂饮食似乎增强了脂肪代谢,由增加的肉氨酸和体以及减少的氨基酸证明.
- 在LCHF饮食中的特定碳酸可能会损害碳水化合物代谢和耐力表现.
- 低GI饮食可能会促进新陈代谢的灵活性,而高GI饮食可能会减少因高胰岛素血症而导致的脂肪酸氧化.
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