They also were given a capsule containing either 0.5 gram, 1 gram or 1.5 grams of ginger, or a placebo capsule.
研究者还向他们提供了一粒分别含有0.5克、1克与1.5克生姜的胶囊或是一剂安慰剂。
Participants were randomly assigned to either use green tea every day, as a beverage or capsule, or be part of "control" groups that took placebo capsules, drank a low-catechin tea or downed water.
实验的参与者被随机分配到每天都服用绿茶饮料或胶囊制品的实验组和服用安慰剂胶囊和喝低儿茶素的茶或者更直接饮用水的控制组。
They got either a placebo or one of three doses of powdered ginger in a capsule.
这些患者每天会领到一份“安慰药”，或是三种姜粉胶囊的其中一种。
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