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Physiologic Effects of an External Nasal Dilator
Author(s) -
Griffin John W.,
Hunter Gary,
Ferguson Drew,
Sillers Michael J.
Publication year - 1997
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1097/00005537-199709000-00014
Subject(s) - dilator , medicine , heart rate , placebo , acoustic rhinometry , ventilation (architecture) , respiratory rate , respiratory exchange ratio , respiratory system , cardiology , anesthesia , surgery , nose , blood pressure , mechanical engineering , alternative medicine , pathology , engineering
An external nasal dilator (Breathe Right, CNS, Inc., Bloomington, MN) has become popular with athletes. The dilator is an adhesive band with a central elastic strip. When applied across the nasal valve, the device theoretically increases nasal valve area. We used acoustic rhinometry (Hood Laboratories, Pembroke, MA) to measure the cross‐sectional area at the nasal valve with and without the device in 53 athletes. Thirty athletes were exercised on a cycle ergometer with and without the device while measuring physiologic parameters, including oxygen consumption (VO 2 ), heart rate, and respiratory rate. The study was conducted in a randomized, double‐blind, placebo‐controlled manner. At rest, the external nasal dilator was found to significantly increase nasal valve area in all demographic groups measured. The device was also found to significantly decrease submaximal exercise perceived exertion, heart rate, ventilation, and VO 2 when compared with placebo.