In this randomized, double-blind, crossover trial, hyperinsulinemic-euglycemic glucose clamps measured insulin sensitivity in 12 healthy volunteers given caffeine or placebo intravenously.

• 此次随机化双盲交叉试验中，对12位身体健康的志愿者施以静脉注射咖啡因或者安慰剂，并采用正常血糖-高血浆胰岛素钳夹技术测量其胰岛素敏感性。