Breathing patterns in people with exercise‐induced laryngeal obstruction

Abstract Exercise‐induced laryngeal obstruction (EILO) is common, but we lack readily available diagnostic tools. The larynx represents an important point of resistance in the airways, and we therefore hypothesized that EILO is associated with characteristic breathing patterns possible to record fro...

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Autores principales:	Astrid Haugen Lie, Ingvild Grønnevik, Bente Frisk, Ola Drange Røksund, Ida Hammer, Maria Vollsæter, Thomas Halvorsen, Hege H. Clemm
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	EILO exercise physiology laryngeal obstruction respiratory physiology Physiology QP1-981
Acceso en línea:	https://doaj.org/article/af000f98094041899c71c717980eedb9
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spelling	oai:doaj.org-article:af000f98094041899c71c717980eedb92021-11-27T15:48:30ZBreathing patterns in people with exercise‐induced laryngeal obstruction2051-817X10.14814/phy2.15086https://doaj.org/article/af000f98094041899c71c717980eedb92021-11-01T00:00:00Zhttps://doi.org/10.14814/phy2.15086https://doaj.org/toc/2051-817XAbstract Exercise‐induced laryngeal obstruction (EILO) is common, but we lack readily available diagnostic tools. The larynx represents an important point of resistance in the airways, and we therefore hypothesized that EILO is associated with characteristic breathing patterns possible to record from a standard incremental ergospirometry test. We studied 24 individuals with moderate/severe EILO and 20 individuals with no‐EILO, mean (SD) age 17 (6.1) and 24 (6.4) years, respectively. EILO versus no‐EILO was verified from maximal continuous laryngoscopy treadmill exercise (CLE) tests, which also included ergospirometry. We described the relationships between minute ventilation (V˙E) versus tidal volume (VT) and V˙E versus carbon dioxide output (V˙CO2), using respectively quadratic and linear equations, and applied adjusted regression models to compare ergospirometry data and curve parameters. Compared to the no‐EILO group, the group with EILO had prolonged inspiratory time (Tin), lower breathing frequency (Bf), lower V˙E, and lower inspiratory flow rate (V˙in) at peak exercise. Mathematical modeling of the breathing pattern relationships was feasible in both groups, with similar coefficients of variation. For V˙E versus VT, the mathematical curve parameters were similar. For V˙E versus V˙CO2, the slope was similar but the intercept was lower in the EILO group. EILO was associated with prolonged Tin, lower Bf, V˙E, and V˙E. The relationship between V˙E versus VT was similar, whereas for V˙E versus V˙CO2, the slope was almost parallel but shifted downward for the EILO group. Most ergospirometry data overlapped, except V˙in which discriminated between EILO and no‐EILO in a promising way.Astrid Haugen LieIngvild GrønnevikBente FriskOla Drange RøksundIda HammerMaria VollsæterThomas HalvorsenHege H. ClemmWileyarticleEILOexercise physiologylaryngeal obstructionrespiratory physiologyPhysiologyQP1-981ENPhysiological Reports, Vol 9, Iss 22, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	EILO exercise physiology laryngeal obstruction respiratory physiology Physiology QP1-981
spellingShingle	EILO exercise physiology laryngeal obstruction respiratory physiology Physiology QP1-981 Astrid Haugen Lie Ingvild Grønnevik Bente Frisk Ola Drange Røksund Ida Hammer Maria Vollsæter Thomas Halvorsen Hege H. Clemm Breathing patterns in people with exercise‐induced laryngeal obstruction
description	Abstract Exercise‐induced laryngeal obstruction (EILO) is common, but we lack readily available diagnostic tools. The larynx represents an important point of resistance in the airways, and we therefore hypothesized that EILO is associated with characteristic breathing patterns possible to record from a standard incremental ergospirometry test. We studied 24 individuals with moderate/severe EILO and 20 individuals with no‐EILO, mean (SD) age 17 (6.1) and 24 (6.4) years, respectively. EILO versus no‐EILO was verified from maximal continuous laryngoscopy treadmill exercise (CLE) tests, which also included ergospirometry. We described the relationships between minute ventilation (V˙E) versus tidal volume (VT) and V˙E versus carbon dioxide output (V˙CO2), using respectively quadratic and linear equations, and applied adjusted regression models to compare ergospirometry data and curve parameters. Compared to the no‐EILO group, the group with EILO had prolonged inspiratory time (Tin), lower breathing frequency (Bf), lower V˙E, and lower inspiratory flow rate (V˙in) at peak exercise. Mathematical modeling of the breathing pattern relationships was feasible in both groups, with similar coefficients of variation. For V˙E versus VT, the mathematical curve parameters were similar. For V˙E versus V˙CO2, the slope was similar but the intercept was lower in the EILO group. EILO was associated with prolonged Tin, lower Bf, V˙E, and V˙E. The relationship between V˙E versus VT was similar, whereas for V˙E versus V˙CO2, the slope was almost parallel but shifted downward for the EILO group. Most ergospirometry data overlapped, except V˙in which discriminated between EILO and no‐EILO in a promising way.
format	article
author	Astrid Haugen Lie Ingvild Grønnevik Bente Frisk Ola Drange Røksund Ida Hammer Maria Vollsæter Thomas Halvorsen Hege H. Clemm
author_facet	Astrid Haugen Lie Ingvild Grønnevik Bente Frisk Ola Drange Røksund Ida Hammer Maria Vollsæter Thomas Halvorsen Hege H. Clemm
author_sort	Astrid Haugen Lie
title	Breathing patterns in people with exercise‐induced laryngeal obstruction
title_short	Breathing patterns in people with exercise‐induced laryngeal obstruction
title_full	Breathing patterns in people with exercise‐induced laryngeal obstruction
title_fullStr	Breathing patterns in people with exercise‐induced laryngeal obstruction
title_full_unstemmed	Breathing patterns in people with exercise‐induced laryngeal obstruction
title_sort	breathing patterns in people with exercise‐induced laryngeal obstruction
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/af000f98094041899c71c717980eedb9
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Breathing patterns in people with exercise‐induced laryngeal obstruction

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