急性咖啡因摄入量对美联储国家炼期间脂肪氧化率的影响:系统性审查和元分析
Javier Fernández-Sánchez1, Daniel Trujillo-Colmena1, Adrián Rodríguez-Castaño1
1Sport Sciences Research Centre, Rey Juan Carlos University, 28943 Madrid, Spain.
Nutrients
|January 23, 2024
概括
运动前甚至饭后摄入咖啡因会促进脂肪的氧化. 较低剂量 (<6 mg/kg) 和较少的咖啡因使用显示在运动期间最显著的脂肪燃烧效应.
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:
- 众所周知,咖啡因在禁食运动期间增加脂肪氧化.
- 运动前的食可以影响咖啡因对脂肪代谢的影响,这是由于改变了血糖和胰岛素的反应.
- 咖啡因在养状态运动期间对脂肪氧化的影响需要进一步调查.
研究的目的:
- 系统地审查和分析有关急性咖啡因摄入对养状态下亚最大有氧运动期间脂肪氧化影响的研究.
- 为了确定咖啡因消费是否会改变脂肪氧化率,当运动是在饭后 (5小时内) 进行时.
主要方法:
- 18个随机,安慰剂控制的交叉试验 (1982-2021) 的系统综述和元分析.
- 包括228名参与者 (185名男性,43名女性).
- 在运动期间比较脂肪氧化率与安慰剂与咖啡因,使用标准化平均差异 (SMD) 与95%置信区间.
主要成果:
- 咖啡因在食状态运动期间显著增加脂肪氧化 (SMD = 0.65,p = 0.020).
- 这种效应在咖啡因剂量 < 6 mg/kg (SMD = 0.86,p = 0.004) 时显著,但在剂量 ≥ 6 mg/kg (SMD = -0.03,p = 0.97) 时没有显著.
- 在活跃的未经训练的个体和从未服用过咖啡因的参与者中观察到脂肪氧化的增加,但在有氧训练的个体或习惯性咖啡因消费者中没有.
结论:
- 急性咖啡因摄入增加脂肪氧化过程中,在一个充足的状态下进行的亚最大有氧运动.
- 咖啡因对脂肪氧化的人体效应取决于剂量,在较低剂量 (<6 mg/kg) 时更为明显.
- 有氧健身水平和咖啡因习惯性影响咖啡因在养状态运动期间对脂肪氧化影响的程度.
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