Engan Mette, Hammer Ida Jansrud, Stensrud Trine, Gundersen Hilde, Edvardsen Elisabeth, Clemm Hege Havstad
Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway.
Institute of Clinical Science, University of Bergen, Bergen, Norway.
BMJ Open Sport Exerc Med. 2020 Aug 24;6(1):e000815. doi: 10.1136/bmjsem-2020-000815. eCollection 2020.
To evaluate changes in pulmonary function and feasibility of portable continuous laryngoscopy during maximal uphill running.
Healthy volunteers participated in an uphill race. Forced expiratory volume in 1 s (FEV) and forced vital capacity (FVC) were obtained before and 5 and 10 min after finishing the race. Capillary blood lactate concentration ([BLa]) and Borg score for perceived exertion were registered immediately after the race. One participant wore a portable video-laryngoscope during the race, and the video was assessed for technical performance.
Twenty adult subjects participated with a mean (SD) age of 40.2 (9.7) years. Mean (SD) race duration and post-exercise [BLa] was 13.9 (2.3) min and 10.7 (2.1) mmol/L, respectively, and the median (range) Borg score for perceived exertion was 9 (5-10). Mean percentage change (95% CI) 5 and 10 min post-exercise in FEV were 6.9 (3.7 to 10.2) % and 5.9 (2.7 to 9.0) %, respectively, and in FVC 5.2 (2.3 to 8.1) % and 4.7 (1.6 to 7.9) %, respectively. The recorded video of the larynx was of good quality.
Maximal aerobic field exercise induced bronchodilatation in the majority of the healthy non-asthmatic participants. It is feasible to perform continuous video-laryngoscopy during heavy uphill exercise.
评估最大强度上坡跑期间肺功能的变化以及便携式连续喉镜检查的可行性。
健康志愿者参加了一场上坡比赛。在比赛前、结束后5分钟和10分钟时获取1秒用力呼气量（FEV）和用力肺活量（FVC）。比赛结束后立即记录毛细血管血乳酸浓度（[BLa]）和主观用力程度的Borg评分。一名参与者在比赛期间佩戴了便携式视频喉镜，并对视频的技术性能进行了评估。
20名成年受试者参与，平均（标准差）年龄为40.2（9.7）岁。平均（标准差）比赛持续时间和运动后[BLa]分别为13.9（2.3）分钟和10.7（2.1）mmol/L，主观用力程度的中位数（范围）Borg评分为9（5 - 10）。运动后5分钟和10分钟时FEV的平均百分比变化（95%CI）分别为6.9（3.7至10.2）%和5.9（2.7至9.0）%，FVC的平均百分比变化分别为5.2（2.3至8.1）%和4.7（1.6至7.9）%。记录的喉部视频质量良好。
最大强度有氧运动在大多数健康非哮喘参与者中诱发了支气管扩张。在剧烈上坡运动期间进行连续视频喉镜检查是可行的。
