在亚最大运动期间的脂肪氧化峰值在月经周期和联合口服避孕药阶段保持一致
Ida E Löfberg1, Jari E Karppinen, Iida Laatikainen-Raussi1
1Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, FINLAND.
Medicine and science in sports and exercise
|February 17, 2025
概括
在运动期间的基质代谢,包括峰值脂肪氧化 (PFO) 和FATMAX,在不使用口服避孕药的女性中,在月经周期 (MC) 阶段保持稳定. 联合口服避孕药 (COC) 的使用与自然MC阶段相比显示了一些差异.
科学领域:
- 运动生理学 运动生理学
- 内分泌学 在内分泌学.
- 运动营养 运动营养
背景情况:
- 月经周期 (MC) 期间的荷尔蒙波动可能会影响运动期间的基质代谢.
- 雌激素 (E2) 和孕激素 (P4) 是可能影响燃料利用的关键激素.
- 组合口服避孕药 (COC) 改变内源性荷尔蒙特征,可能影响运动代谢.
研究的目的:
- 通过自然MC和COC使用的不同阶段,研究运动期间的基质代谢.
- 为了比较自然月经妇女 (NoOC) 和使用COC (COC) 的妇女之间的峰值脂肪氧化 (PFO) 和FATMAX.
主要方法:
- 参与者 (NoOC,n=34;COC,n=19) 在卵泡/不活跃和质/活跃阶段的禁食状态下进行评估.
- 测量了血清E2和P4水平. 通过生物阻抗来评估身体成分.
- 间接热量计确定了PFO和FATMAX (PFO强度),随后测量了V̇O2PEAK.
主要成果:
- PFO和FATMAX在毛囊和质阶段 (NoOC) 或不活跃和活跃阶段 (COC) 之间没有显著差异.
- 然而,PFO和FATMAX在不活跃的COC阶段明显高于毛囊阶段 (NoOC).
- 在对无脂肪质量和V·O2PEAK进行调整后,PFO的差异仍然很大,但在排除异常值后,它变得不显著.
结论:
- 峰值脂肪氧化和FATMAX在自然MC阶段和COC阶段通常是稳定的,表明不需要按周期阶段标准化测量.
- 与内源性激素相比,COC中的外源性激素可能具有不同的代谢作用,正如在非活性COC阶段与自然卵泡阶段期间更高的PFO和FATMAX所表明的那样.
- 临床医生和研究人员在评估运动表现和代谢反应时,应考虑对基质代谢的潜在荷尔蒙影响.
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