| Nasal dilator strips delay the onset of oral route breathing during exercise. | |
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MedLine Citation:
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PMID: 10638341 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The external nasal dilator strip (ENDS) device (Breathe Right, CNS Inc., Chanhassen, MN, USA) has been adopted by athletes to promote nasal route breathing during exercise. We studied the influence of ENDS on the switching point from nasal-only to oro-nasal breathing during exercise in 4 healthy men (age 25 +/- 2 yrs, mean +/- SEM) and 5 women (age 30 +/- 5 yrs). Resting inspiratory nasal airflow resistance decreased from 0.33 +/- 0.02 kPa/L/s without ENDS to 0.22 +/- 0.01 kPa/L/s with ENDS (p < 0.01). ENDS delayed the onset of oro-nasal breathing such that the time from commencement of exercise to switching increased by 15.2%, and maximum levels of inspiratory nasal airflow and ventilation achieved prior to switching increased by 14.9% and 14.3%, respectively (all p < 0.05). We conclude that, in normal healthy subjects, ENDS does promote nasal route breathing during exercise, but any delay in the onset of oral route breathing during a progressive exercise task appears relatively small. |
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Authors:
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M Seto-Poon; T C Amis; J P Kirkness; J R Wheatley |
Publication Detail:
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Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Canadian journal of applied physiology = Revue canadienne de physiologie appliquée Volume: 24 ISSN: 1066-7814 ISO Abbreviation: Can J Appl Physiol Publication Date: 1999 Dec |
Date Detail:
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Created Date: 2000-02-01 Completed Date: 2000-02-01 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9306274 Medline TA: Can J Appl Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 538-47 Citation Subset: IM; S |
Affiliation:
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School of Science, Univ. of Western Sydney-Nepean, Kingswood, NSW, Australia. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Airway Resistance / physiology Dilatation / instrumentation Equipment Design Exercise Test Female Humans Inhalation / physiology Male Mouth / physiology* Nose / physiology* Physical Exertion / physiology* Pulmonary Ventilation / physiology* Respiration* Single-Blind Method Time Factors Work of Breathing / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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