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Physiologic effects of an external nasal dilator
J W Griffin1, G Hunter, D Ferguson
1Division of Otolaryngology/Head and Neck Surgery, University of Alabama at Birmingham, U.S.A.
The Laryngoscope
|September 18, 1997
Summary
External nasal dilators significantly increase nasal valve area at rest. During exercise, these devices reduce perceived exertion, heart rate, ventilation, and oxygen consumption in athletes.
Area of Science:
- Sports Medicine
- Physiology
- Medical Devices
Background:
- External nasal dilators are popular among athletes for improving nasal airflow.
- The theoretical mechanism involves increasing nasal valve area.
Purpose of the Study:
- To objectively assess the effect of an external nasal dilator on nasal valve area.
- To evaluate the impact of the dilator on physiological parameters during submaximal exercise in athletes.
Main Methods:
- A randomized, double-blind, placebo-controlled study involving 53 athletes.
- Acoustic rhinometry was used to measure nasal valve area at rest.
- Physiological parameters (VO2, heart rate, respiratory rate, perceived exertion) were measured during cycle ergometry.
Main Results:
- The nasal dilator significantly increased nasal valve area at rest across all measured demographics.
- Compared to placebo, the device significantly decreased submaximal exercise perceived exertion, heart rate, ventilation, and oxygen consumption (VO2).
Conclusions:
- External nasal dilators effectively increase nasal valve area.
- The use of nasal dilators during exercise can lead to improved physiological efficiency and reduced perceived exertion in athletes.