总体蛋白质质量模型对青少年运动员的有用性
Analiza M Silva1, Francesco Campa2, Luís B Sardinha1
1Exercise and Health Laboratory, CIPER, Faculdade Motricidade Humana, Universidade de Lisboa, Lisbon, Portugal.
Frontiers in nutrition
|July 23, 2024
概括
估计年轻运动员的总体蛋白质 (TBPro) 使用双能量X射线吸收计 (DXA) 假设水分是有效的组评估. 然而,这种不那么费力的方法对于个体运动员的测量来说不那么准确.
科学领域:
- 运动医学 运动医学
- 人类生理学 人类生理学
- 身体组成分析 身体成分分析
背景情况:
- 准确评估全体蛋白质 (TBPro) 对于了解年轻运动员的营养状况和生理适应是至关重要的.
- 传统的TBPro估计多元组件模型往往是繁且耗时的,限制了它们在运动群体中的实际应用.
- 双能X射线吸收计 (DXA) 提供了一个不那么侵入性的替代方案,但其在估计TBPro的准确性,特别是在青少年中,需要进一步验证.
研究的目的:
- 评估一种基于DXA的,较少费力的技术,用于估计青少年运动员体内总蛋白质 (TBPro) 的实用性.
- 为了比较DXA衍生的TBPro估计的准确性,使用假设与测量的无脂肪质量 (FFM) 水分数与多元组件参考模型进行比较.
主要方法:
- 作为TBPro估计的标准方法,采用了6个分区的多元组件模型.
- 使用DXA来评估瘦软质量和无脂肪质量 (FFM).
- 用公式计算DXA衍生的TBPro:TBPro = LSM - HFFFM × FFM - Ms. - G,使用FFM的假设和测量水分数 (HFFFM).
主要成果:
- 使用假定的水化分数的DXA模型解释了与参考方法相比TBPro的73%-77%的差异.
- 使用测量水化分数的DXA模型显示,解释能力较低 (53%的男孩,36%的女孩) 和偏差更大.
- 假设水化分数的DXA模型在组评估中表现出更好的一致性,而测量水化模型在个人估计中不太准确.
结论:
- 使用假设的水分分数的较不复杂的DXA模型对于青少年运动员TBPro的群体级估计是有效的.
- 这些DXA模型对于个别的TBPro评估来说不那么准确,这凸显了解释单个主体数据时需要谨慎.
- 未来的研究应该探索这些模型在纵向研究和年轻运动员的营养或运动干预后的有用性.
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