University of Ontario Institute of Technology, 2000 Simcoe St N, Oshawa, ON, L1H 7K4, Canada.
Lung. 2019 Oct;197(5):609-612. doi: 10.1007/s00408-019-00264-x. Epub 2019 Sep 4.
The eucapnic voluntary hyperpnea (EVH) challenge is used to determine the presence of exercise-induced bronchoconstriction (EIBC) by monitoring changes in forced expiratory volume in 1 s (FEV). However, the predictability of the post-EVH decline in FEV on post-exercise FEV remains unclear. Participants completed an EVH challenge to confirm EIBC and completed a continuous exercise (CONT; n = 21), high-intensity interval exercise (HI; n = 13), and sprint interval exercise (SPRT; n = 8) sessions on separate days. FEV was assessed pre- and post exercise. A 1% decline in FEV, post EVH was associated with 0.44%, 0.85%, and 0.56% declines in FEV post CONT, post HI, and post SPRT, respectively. The decline in FEV following the EVH challenge was associated with the decline in FEV following all exercise conditions, with the strongest association being observed following HI. These findings may have implications for exercise prescription and asthma education for recreationally active adults with EIBC.
eucapnic 自愿性过度通气（EVH）挑战用于通过监测 1 秒用力呼气量（FEV）的变化来确定运动诱发的支气管收缩（EIBC）的存在。然而，EVH 后 FEV 的下降对运动后 FEV 的预测性尚不清楚。参与者完成 EVH 挑战以确认 EIBC，并在不同天完成连续运动（CONT；n=21）、高强度间歇运动（HI；n=13）和冲刺间歇运动（SPRT；n=8）。在运动前和运动后评估 FEV。EVH 后 FEV 下降 1%，与 CONT、HI 和 SPRT 后 FEV 分别下降 0.44%、0.85%和 0.56%相关。EVH 挑战后 FEV 的下降与所有运动条件后 FEV 的下降相关，与 HI 后观察到的相关性最强。这些发现可能对患有 EIBC 的娱乐性活跃成年人的运动处方和哮喘教育具有重要意义。
