Article Text
PDF
Abstract
Objective To evaluate changes in pulmonary function and feasibility of portable continuous laryngoscopy during maximal uphill running.
Methods Healthy volunteers participated in an uphill race. Forced expiratory volume in 1 s (FEV1) 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.
Results 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 FEV1 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.
Conclusions 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.
- Exercise testing
- Feasibility
- Lungs
- Outdoor
This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/.
Statistics from Altmetric.com
Footnotes
Twitter Mette Engan @EnganMette.
Acknowledgements The authors thank Fredrik Dahlstrøm, Bjørnar Sandland Henriksen and Espen Wagener from Timik AS Norway, for providing spirometry devices and personnel to conduct the study. (Timik AS is the provider of medical technical equipment at the cardiopulmonary test laboratory at the Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, and was chosen by tender).
Contributors ME and HHC conceptualised and designed the study, collected data, carried out the analyses, drafted the initial manuscript and revised the manuscript. IJH designed the data collecting instrument, collected data and reviewed and revised the manuscript for important intellectual content. TS, HG and EE conceptualised and designed the study, designed the data collection instruments, collected data and reviewed and revised the manuscript for important intellectual content. All authors approved the final manuscript as submitted and agree to be accountable for all aspects of the work.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests EE received salary from GlaxoSmithKline with no potential conflicts of interest with respect to the research, authorship and/or publication of this article. The other authors have no conflicts of interest relevant to this article to disclose.
Provenance and peer review Not commissioned; externally peer reviewed.
Data availability statement In accordance with the approvals granted for this study by The Regional Committee on Medical Research Ethics and The Norwegian Data Inspectorate, the data files are stored securely and in accordance with the Norwegian Law of Privacy Protection. All relevant data are presented in the paper. Because of the limited numbers of participants, only a subset of the data file will be made available to interested researches upon reasonable request to hege.synnove.havstad.clemm{at}helse-bergen.no providing Norwegian privacy legislation and GDPR are respected, and that permission is granted from The Norwegian Data Inspectorate and the data protection officer at Haukeland University Hospital.