Descriptive characteristics of the participants.

Data represent the mean values ± standard deviation unless otherwise indicated.FEV1, forced expiratory volume in one second.Descriptive characteristics of the participants.除非另有说明，本数据集所有数据均以平均值±标准差表示。FEV1（forced expiratory volume in one second，即一秒用力呼气容积。受试者的描述性特征。