Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/92620
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Type: Journal article
Title: The prevalence of abnormal breathing patterns during exercise and associations with dynamic upper respiratory tract obstructions
Author: Fitzharris, L.
Franklin, S.
Allen, K.
Citation: Equine Veterinary Journal, 2015; 47(5):553-556
Publisher: Wiley
Issue Date: 2015
ISSN: 0425-1644
2042-3306
Statement of
Responsibility: 
L. E. Fitzharris, S. H. Franklin and K. J. Allen
Abstract: Reasons for performing study: There is very limited published information on the prevalence and significance of abnormal breathing patterns adopted during canter/gallop. Objectives: The aim of this study was to report the prevalence of abnormal breathing patterns during canter/gallop and to investigate whether these may be associated with dynamic upper respiratory tract (URT) obstructions. Study design: Retrospective analysis of clinical records. Methods: Simultaneous audio and URT videoendoscopy recordings from 365 horses referred for treadmill evaluation were analysed. Results: Thirty percent of horses had an abnormal breathing pattern at canter or gallop, of which 23% had a 2:1 breathing pattern (i.e. one breath is taken over two strides). The prevalence of abnormal breathing patterns was higher at low canter speeds than during strenuous exercise. There was a significant association between breathing pattern during strenuous exercise and the presence of an URT obstruction. Conclusions: This study suggests that abnormal breathing patterns during canter and gallop may be associated with dynamic URT obstructions; therefore, horses identified by owners or veterinary surgeons to have an abnormal breathing pattern during exercise, in particular a 2:1 breathing pattern, may warrant investigations for diagnosis of respiratory tract disease.
Keywords: horse; breathing pattern; exercise; upper airway
Description: Article first published online: 21 SEP 2014
Rights: © 2014 EVJ Ltd
DOI: 10.1111/evj.12325
Appears in Collections:Animal and Veterinary Sciences publications
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