尿液采样时间可能会影响尿液的特异重量和身体组成之间的关联
Patrick B Wilson1, Brian K Ferguson2, Ian P Winter3
1Associate Professor of Exercise Science, Human Performance Laboratory, School of Exercise Science, Old Dominion University, Norfolk, Virginia, United States of America.
PloS one
|September 26, 2025
概括
尿液特定重量 (USG) 测量水分状态受收集时间的影响. 没有脂肪的质量 (FFM) 在非禁食现场样本中与USG积极相关,但不是第一天早上的样本.
科学领域:
- 运动科学 运动科学 运动科学
- 人体生理学 人体生理学
- 营养科学 营养科学
背景情况:
- 尿液特异重量 (USG) 是体育和研究中常见的水分生物标志物.
- 之前的研究表明,无脂肪质量 (FFM) 和高血压之间存在联系.
- 样本采集时间 (早上和现场) 和营养对这种关系的影响尚不清楚.
研究的目的:
- 调查收集时间和营养因素如何影响USG和身体组成之间的关系.
- 为了比较USG值和它们与身体成分的关联,在早晨和随机样本之间进行.
主要方法:
- 涉及成年人的横截面观察性研究.
- 收集禁食第一天早上和非禁食的点滴尿样,用于USG测量.
- 使用InBody 770.0评估身体组成 (FFM,骨肌肉质量,总体水分).
- 通过自动自给24小时回忆来评估24小时的饮食摄入量 (蛋白质,水,).
主要成果:
- 与随机样本 (1.011) 相比,第一个早晨的样本 (1.018) 中央USG显著更高.
- 在第一天早上的样本 (41.8%) 和随机样本 (21.6%) 中,USG≥1.020的患病率较高.
- FFM,骨肌肉质量和总体水量与非禁食的现场USG有显著的积极关联,但与禁食的第一天早上的USG没有显著的积极关联.
- 对于采集时间,饮食变量和USG之间没有发现显著的关联.
结论:
- 身体组成 (FFM) 和USG之间的关系可能取决于尿样采集时间.
- 与第一天早晨的空腹样本相比,非禁食的点尿样本似乎受到FFM的更多影响.
- 第一天早上的空气样本可能会提供更标准化的水分测量,不太受身体成分的影响.
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