测量最大1秒钟用力呼气量（FEV1），并记录病人的自我报告改善等级评定。
Maximum forced expiratory volume in 1 second (FEV1) was measured, and patients' self-reported improvement ratings were recorded.
方法：受试的对象为可疑的运动诱导的支气管痉挛的健康、体格健壮的个体，用乙酰胆碱激发气道反应后，测定一秒钟用力呼气量。
Methods: Healthy, athletic subjects who are suspected of having exercise-induced bronchospasm were recruited, and FEV1 values were determined following provocative airway challenges with methacholine.
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