英国的这项研究检测了13种常见饮品在72位男性身体中的补水指数,这些受测者的年龄均在25岁左右,他们在测试初饮用了一公升的水作为参照标准。两小时后受测者体内水分含量——即未经由尿液流失的液体量——被记录为1.0。然后以相似的方式测试其他饮料的补水指数,再将其与水的指数作比较。高于1.0的饮料的体内水分留存率高于水,低于1.0的饮料排出率高于水。
The results showed that four beverages — oral rehydration solution, like Pedialyte; fat-free milk; whole milk and orange juice — had a significantly higher hydration index than water. The first three had hydration index scores around 1.5, with orange juice doing slightly better than water at 1.1. Oral rehydration solutions are specifically formulated to combat serious dehydration such as that resulting from chronic diarrhea.
研究显示有四种饮料的补水指数远高于水,它们分别是以电解质液体为代表的口服补水溶液;脱脂牛奶;全脂牛奶和橙汁。前三种饮料的补水指数高达1.5左右,橙汁的补水指数为1.1,比水略高。口服补水溶液是为应对严重脱水(如慢性腹泻所引发的脱水)而配制的。
“It’s a very clever, even brilliant study,” said Lawrence Armstrong, a hydration expert at the University of Connecticut and immediate past president of the American College of Sports Medicine. “It assumes that water is the optimal rehydration fluid, which is biologically correct, and then compares other fluids to water.”
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