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更大的乳酸积累不会改变关键食欲调节神经的外围度

Seth F McCarthy¹, Derek P D Bornath¹, Jessica A L Tucker¹

¹Department of Kinesiology and Physical Education, Wilfrid Laurier University, Waterloo, Ontario, Canada.

Journal of applied physiology (Bethesda, Md. : 1985)

|October 3, 2024

概括

在高强度间歇训练 (HIIT) 期间补充二碳酸 (NaHCO3) 并没有抑制食欲. 与以前的研究相比,较低的乳酸积累没有改变食欲激素或感知,这表明乳酸大小影响食欲抑制.

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
调节食欲调节食欲是什么意思

背景情况:

运动期间的乳酸积累被假定有助于抑制食欲.
以前的研究表明,乳酸和食欲下降之间存在联系,但机制尚未完全理解.

研究的目的:

为了研究乳酸在运动诱导的食欲抑制中的作用.
为了检查二碳酸 (NaHCO3) 补充剂对调节食欲的神经 (NPY,AgRP,α-MSH) 和乙烯酸 ghrelin 的影响.
评估对主观食欲感知和能量摄入的影响.

主要方法:

双盲,安慰剂控制,随机交叉设计与12名成年人.
高强度间歇训练 (HIIT) 训练,可以摄入NaHCO3 (BICARB) 或化 (PLACEBO).
测量包括血中的乳酸盐,酸格林,NPY,AgRP,α-MSH,食欲感知和能量摄入.

主要成果:

与安慰剂相比,BICARB的摄入导致了运动后血液乳酸的增加,但没有改变酸格林,食欲感知或能量摄入.
在这两种条件下,神经Y (NPY) 和阿古蒂相关 (AgRP) 在运动后增加,但没有显示会话差异.
阿尔法黑色素细胞刺激激素 (α-MSH) 度保持不变.

结论:

在这项研究中,NaHCO3和HIIT观察到的乳酸积累减少并没有诱导食欲抑制.
这些发现表明,乳酸积累的程度可能是运动诱导的食欲抑制的一个关键因素.
胃口调节可能涉及到中央神经的变化,而不是在外围反映,或者需要乳酸积累的门来抑制.

关键词:

调节食欲 - 调节食欲的方法食物摄入量食物摄入量肠道激素肠道激素神经皮质是一种神经皮质.

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