背景:通过比较饮用饮料后的液体吸收程度和血浆体积变化,来验证口服补液溶液(ORS)对运动员的水合作用,包括ORS。
方法:31名参与者以1周的间隔访问测试实验室4次,以消耗1升饮料(例如,水,ORS,和两个运动饮料[SpD])每次访问30分钟。1h时测量尿量4次,2h,3h,和饮料消费后4小时。1小时采集血样3次,2h,和饮料消费后3小时。在饮用饮料后4小时内测量一次体重。
结果:ORS的体重变化小于水,SpD1和SpD2(p<0.05)。ORS在4小时内的累积尿量较低,SpD1和SpD2比水(p<0.05),ORS低于SpD2(p<0.05)。ORS在4小时内的BHI较高,SpD1和SpD2比水(p<0.05),ORS高于SpD2(p<0.05)。在所有测试时间,不同饮料的PVC没有显着差异,即..,1h,2h,和3小时。
结论:我们评估了饮用饮料的水合作用,比如水,SpD,和ORS在运动员中。ORS和SpD比水更有效。ORS和SpD之间的比较表明,结果可能因SpD的类型而异。
BACKGROUND: To verify the hydration effects of oral rehydration solution (ORS) on athletes by comparing the degrees of fluid absorption and plasma volume changes following beverage consumption, including ORS.
METHODS: Thirty-one participants visited the testing laboratory 4 times at 1-week intervals to consume 1 L of beverage (e.g., water, ORS, and two sports drinks [SpD]) for 30 min on each visit. The urine output was measured 4 times at 1 h, 2 h, 3 h, and 4 h after beverage consumption. A blood sample was collected 3 times at 1 h, 2 h, and 3 h after beverage consumption. Body weight was measured once in 4 h after beverage consumption.
RESULTS: Body weight change was smaller for ORS than for water, SpD1, and SpD2 (p < 0.05). Cumulative urine output in 4 h was lower for ORS, SpD1, and SpD2 than for water (p < 0.05), and it was lower for ORS than for SpD2 (p < 0.05). BHI in 4 h was higher for ORS, SpD1, and SpD2 than for water (p < 0.05), and it was higher for ORS than for SpD2 (p < 0.05). There was no significant difference in PVC for different beverages at all test times, i.e.., 1 h, 2 h, and 3 h.
CONCLUSIONS: We evaluated the hydration effects of the consumption of beverages, such as water, SpD, and ORS in athletes. ORS and SpD were more effective than water. A comparison between ORS and SpD showed that the result could vary depending on the type of SpD.