运动强度对节省碳水化合物的影响 运动后:对运动后低血糖的影响
Raymond J Davey1, Mohamad H Jaafar2, Luis D Ferreira2
1Curtin School of Allied Health, Curtin University, Whadjuk Noongar Country, Perth, WA, Australia.
International journal of sport nutrition and exercise metabolism
|November 2, 2023
概括
更高的运动强度增加了运动期间的碳水化合物使用,但在恢复期间促进了脂肪氧化. 这种转变受到运动强度依赖的荷尔蒙变化的影响,在中等强度炼后有助于节省碳水化合物.
科学领域:
- 运动生理学 运动生理学
- 代谢调节 代谢调节 代谢调节
- 内分泌学 在内分泌学.
背景情况:
- 运动强度显著影响基质利用率和代谢反应.
- 了解运动后恢复期间的荷尔蒙调节对于代谢健康至关重要.
- 碳水化合物 (CHO) 和脂肪氧化率根据运动参数而异.
研究的目的:
- 研究运动强度对恢复期间碳水化合物氧化和葡萄糖调节激素的影响.
- 为了比较低强度 (LI) 和中等强度 (MI) 运动恢复之间的基质氧化模式.
- 阐明激素在运动强度依赖的基质利用中的作用.
主要方法:
- 六名参与者在随机设计中进行了1小时的LI (50%乳酸值) 和MI (100%乳酸值) 运动.
- 过期空气分析测量了氧气消耗,呼吸交换比率和基质氧化.
- 血液样本评估了葡萄糖调节激素 (甲基荷兰胺,GH) 和代谢物 (葡萄糖,FFAs).
主要成果:
- 与LI相比,MI运动导致了更高的呼吸交换比率,能量消耗和运动期间的CHO氧化.
- 在康复期间,MI运动显示出较低的呼吸交换比率和CHO氧化比运动前水平和LI.
- 在运动和早期康复期间,MI运动增加了儿科胺和生长激素,自由脂肪酸的趋势更高.
结论:
- 运动强度决定了基质氧化,更高的强度增加了运动期间的CHO使用.
- 与低强度运动相比,中等强度运动在恢复期间促进碳水化合物节约和脂肪氧化.
- 荷尔蒙反应 (甲基荷兰胺,GH) 和脂肪酸的可用性有助于运动强度依赖的基质利用在恢复期间的转变.
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