O'Kroy, J. A. (1997). Effects of an external nasal dilator on performance and ventilation. Medicine and Science in Sports and Exercise, 29(5), Supplement abstract 1611.

The effects of nasal dilators on ventilation and perceived exertion were assessed. Ss (M = 5; F = 10) performed three incremental exercise tests to fatigue. Nasal dilators, nose clip and mouth breathing, and normal breathing were compared. There were no significant differences in any measured variable between any group.

Implication. An external nasal dilator does not enhance performance nor does it alter perceived exertion.

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