3种运动饮料对小白鼠补水能力的比较

A comparative study on the hydration ability of three commercial sports drinks on experimental rats

使用氘稀释技术,比较了休息和运动条件下3种市售运动饮料和饮用水(对照组)的补水能力。结果表明:休息状态下,3种饮料的吸收率达最大值的时间、达最大吸收率的50%的时间和最大吸收量存在显著差异,但其吸收率为0的时间无显著性差异;运动状态下,饮用水和运动饮料的吸收率达最大值的时间存在显著差异。表明氘示踪剂标记法可有效地测量摄入液体被生物体吸收的相对速率,且3种市售运动饮料的补水能力与饮用水的无显著差异。

In this study,using the deuterium dilution technique,the hydration abilities of three kinds of sports drinks commercially available and drinking water(control group)under rest and exercise conditions were compared.The results showed that significant differences were found,in the rest state,including the time points as the absorption rate of the three beverages reached the maximum value,50%of the maximum absorption rate,and the maximum absorption amount.However,no significant difference was found in the time when the absorption rate was 0.In the exercise status,a significant difference between the time when the absorption rate of drinking water and sports drinks reaches the maximum was also found.The results showed that the deuterium tracer labeling method could effectively measure the relative rate of ingested liquid being absorbed by the organism,and the replenishment capacity of the three kinds of commercial sports drinks was not significantly different from that of drinking water.