PDF(Pubmed)
Abstract：
The association of hydration knowledge and health habits with hydration status and fluid intake is rarely examined. We sought to determine whether knowledge or physical health behaviors predict physiological hydration status and fluid intake. Ninety-six participants (59 female; 27 ± 10 year) completed the previously validated hydration survey. Participants then recorded total fluids consumed (TFC), collected urine, and tracked void frequency for 24 h. Hydration status was assessed via 24 h urine specific gravity (USG) and osmolality (Uosm). Health behaviors included self-reported physical activity, BMI, smoking, alcoholic drinking, and sleep status. TFC was significantly correlated with 24 h USG (r = -0.390; p < 0.001), Uosm (r = -0.486; p < 0.001), total urine volume (r = 0.675; p < 0.001), and void frequency (r = 0.518; p < 0.001). Hydration knowledge was not correlated with 24 h USG (r = 0.085; p = 0.420), Uosm (r = 0.087; p = 0.419), urine total volume (r = 0.019; p = 0.857), void frequency (r = 0.030; p = 0.771), or TFC (r = 0.027; p = 0.813). Hydration knowledge did not predict 24 h USG (LR+ = 1.10; LR- = 0.90), Uosm (LR+ = 0.81; LR- = 1.35), or TFC (LR+ = 1.00; LR- = 1.00). Health habits did not predict 24 h USG, Uosm, or TFC. In conclusion, self-reported 24 h diet and fluid log recording is comparable to hydration status verification via 24 h urine collection. Hydration knowledge and health habits are not related to, or predictive of, hydration status.
摘要：
很少检查水合知识和健康习惯与水合状态和液体摄入的关联。我们试图确定知识或身体健康行为是否可以预测生理水合状态和液体摄入量。96名参与者（59名女性；27±10岁）完成了先前验证的水合调查。然后参与者记录消耗的总液体(TFC)，收集尿液,通过24小时尿比重（USG）和渗透压（Uosm）评估水合状态。健康行为包括自我报告的身体活动，BMI,吸烟,酗酒,和睡眠状态。TFC与24hUSG显着相关（r=-0.390；p<0.001），Uosm（r=-0.486；p<0.001），总尿量（r=0.675；p<0.001），和空隙频率(r=0.518；p<0.001)。水化知识与24小时USG无关（r=0.085；p=0.420），Uosm（r=0.087；p=0.419），尿液总体积（r=0.019；p=0.857），空隙频率(r=0.030；p=0.771)，或TFC(r=0.027;p=0.813)。水化知识不能预测24小时USG(LR+=1.10；LR-=0.90)，Uosm(LR+=0.81;LR-=1.35),或TFC(LR+=1.00；LR-=1.00)。健康习惯没有预测24小时USG，Uosm,或TFC。总之,自我报告的24小时饮食和液体日志记录与通过24小时尿液收集进行的水合状态验证相当。水化知识与卫生习惯无关，或预测，水合状态。
