Klimesova Iva, Krejci Jakub, Botek Michal, McKune Andrew J, Jakubec Ales, Neuls Filip, Sladeckova Barbora, Valenta Michal
Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czech Republic.
Collaborative Research in Bioactives and Biomarkers (CRIBB) Group, University of Canberra, Canberra, Australia.
J Hum Kinet. 2022 Apr 26;82:101-110. doi: 10.2478/hukin-2022-0035. eCollection 2022 Apr.
The objective of this cross-sectional study was to evaluate the hydration status of Czech First League soccer players, and to compare the reported fluid intake, perceived fluid intake and thirst sensation of euhydrated (EU) and dehydrated (DE) players. The study involved 124 Czech male professional soccer players (age 25.2±5.0 years) participating in annual winter, pre-season laboratory testing. Hydration status was assessed based on urine specific gravity (USG), euhydration was set at USG≤1.020. Fluid intake and thirst perception were evaluated by a questionnaire. The sample mean for USG was 1.021±0.008, 56% of players were dehydrated. Reported daily fluid intake was significantly (p<0.001, d=0.95, large effect) higher in EU compared to DE players. Daily fluid intake negatively correlated with USG (rS=-0.46, p<0.001, medium effect). The fluid intake perception score was significantly (p=0.005, d=0.54, medium effect) better in EU compared to DE players. Reported intake perception scores negatively correlated with USG (rS=-0.32, p<0.001, medium effect). However, there was no correlation (rS=-0.09, p=0.34, trivial effect) between thirst perception scores and USG. Thirst perception scores were not significantly different between EU and DE players (p=0.35, d=0.18, trivial effect). Our results indicated that self-assessment of both daily fluid intake and perceived fluid intake matched with objective hydration status, while self-assessment of thirst perception was not an appropriate indicator of hydration status in elite soccer players.
这项横断面研究的目的是评估捷克足球甲级联赛球员的水合状态，并比较水合正常（EU）和脱水（DE）球员报告的液体摄入量、感知液体摄入量和口渴感觉。该研究纳入了124名捷克男性职业足球运动员（年龄25.2±5.0岁），他们参加了年度冬季季前实验室测试。根据尿比重（USG）评估水合状态，将水合正常设定为USG≤1.020。通过问卷调查评估液体摄入量和口渴感知。USG的样本均值为1.021±0.008，56%的球员处于脱水状态。与DE球员相比，EU球员报告的每日液体摄入量显著更高（p<0.001，d=0.95，大效应）。每日液体摄入量与USG呈负相关（rS=-0.46，p<0.001，中等效应）。与DE球员相比，EU球员的液体摄入感知得分显著更好（p=0.005，d=0.54，中等效应）。报告的摄入感知得分与USG呈负相关（rS=-0.32，p<0.001，中等效应）。然而，口渴感知得分与USG之间没有相关性（rS=-0.09，p=0.34，微小效应）。EU和DE球员之间的口渴感知得分没有显著差异（p=0.35，d=0.18，微小效应）。我们的结果表明，每日液体摄入量和感知液体摄入量的自我评估与客观水合状态相符，而口渴感知的自我评估不是精英足球运动员水合状态的合适指标。
