Newell M, Newell J, Grant S
Institute of Biomedical and Life Sciences, University of Glasgow, Scotland.
Ir Med J. 2008 Sep;101(8):236-9.
The aim of this study was to investigate fluid and electrolyte balance in elite Gaelic Football players (n=20) during a typical training session in a warm environment (16 to 18 degrees C, 82-88% humidity). Pre-training urine samples were used to determine hydration status. Sweat sodium concentration was collected from four body site locations using absorbent patches. The mean sweat rate per hour was 1.39 l x h(-1) and mean body mass loss was 1.1%. Mean sweat sodium concentrations were 35 mmol x l(-1) (range 19-52 mmol x l(-1)). On average, players did not drink enough fluid to match their sweat rates (p<0.001) and this fluid deficit was not related to pre-training hydration status (p= 0.67). A single hydration strategy based on published guidelines may not be suitable for an entire team due to variations in individual sweat rates. Maximising player performance could be better achieved by accurate quantification of individual fluid and electrolyte losses.
本研究的目的是调查精英盖尔式足球运动员（n = 20）在温暖环境（16至18摄氏度，湿度82 - 88%）下进行典型训练课时的体液和电解质平衡情况。训练前的尿液样本用于确定水合状态。使用吸水贴片从四个身体部位收集汗液钠浓度。每小时的平均出汗率为1.39升×小时⁻¹，平均体重减轻1.1%。平均汗液钠浓度为35毫摩尔×升⁻¹（范围为19 - 52毫摩尔×升⁻¹）。平均而言，运动员摄入的液体不足以匹配其出汗率（p < 0.001），且这种液体不足与训练前的水合状态无关（p = 0.67）。由于个体出汗率存在差异，基于已发表指南的单一水合策略可能不适用于整个团队。通过准确量化个体的体液和电解质损失，可能能更好地提高运动员的表现。
