一种含有碳水化合物的子单 Ester 改善了运动后的认知指标,但并没有改善受过训练的女性的表现
Hunter S Waldman1, Eric K O'Neal1, Gaven A Barker1
1Department of Kinesiology, University of North Alabama, Florence, AL.
Medicine and science in sports and exercise
|December 5, 2023
概括
单与碳水化合物 (KME + CHO) 改善了受过训练的女性的认知功能,但没有提高骑自行车的表现. 这项研究研究了KME + CHO与单独碳水化合物的对身体和认知结果的影响.
科学领域:
- 运动生理学 运动生理学
- 营养生物化学 营养生物化学
- 运动科学 运动科学 运动科学
背景情况:
- 单 (KME) 是外源,可以提高血液水平.
- 碳水化合物 (CHO) 与KME的同时摄入可能会调节运动期间的代谢反应.
- 在训练有素的女性运动员中,KME + CHO对认知功能的影响与身体表现并未完全理解.
研究的目的:
- 研究与单碳水化合物 (CHO) 相比,与碳水化合物 (KME + CHO) 摄入的急性单 Ester 对训练有素女性的骑自行车表现和认知功能的影响.
- 在两个条件下,在运动期间评估代谢反应,包括血液β-基酸盐,葡萄糖和乳酸盐水平.
- 通过心理运动警觉测试,任务切换和不一致的侧面测试来评估认知表现的变化.
主要方法:
- 这是一项双盲,安慰剂控制,交叉研究,涉及12名受过训练的女性.
- 参与者完成了10公里的骑自行车计时试验,先后进行高强度间隔.
- 使用标准化测试评估运动前和运动后的认知表现.
- 参与者服用KME + CHO或单独CHO,KME的剂量为375mg·kg-1体质.
主要成果:
- 与单独CHO相比,KME + CHO摄入显著增加了血液β-基酸盐水平,并在运动期间降低了血糖和乳酸盐度.
- 在KME+CHO和CHO条件之间的10公里计时试验性能中没有发现显著差异.
- 认知表现显示KME + CHO有所改善,特别是心理运动警觉测试速度和不一致的侧边任务反应时间和准确性.
结论:
- 在训练有素的女性中,急性摄入KME + CHO有效地提高血和改变运动期间的代谢标志物.
- 虽然KME + CHO不会提高骑自行车的表现,但它对认知功能的特定方面产生积极影响.
- 这些发现表明,KME + CHO补充剂在支持女性运动员在艰苦运动期间或之后的认知需求方面可能发挥作用.
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