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We aimed to investigate nasal response to exercise in patients with a nasal septal deviation. Acoustic rhinometric measurements of cross-sectional areas (CSA) at 3.3, 4.0, 6.4 cm from the nostril, and nasal volume (NV) were conducted in 10 patients. The consecutive measurements were undertaken just before and immediately after 10, 20, and 30 min of treadmill exercise. In the concave nasal cavities, NV and CSA at 3.3 cm and 6.4 cm from the nostril showed a significant increase in immediate post-exercise and 10-minute post-exercise measurements. At 4.0 cm from the nostril, a significant increase was sustained by 20 min after exercise. However, in convex nasal cavities, exercise did not result in a significant increase except for the immediate post-exercise measurement at 4 cm from the nostril. The results of this study indicated that, in nasal septal deviation, the mucosal response is more prominent in the concave nasal cavities than in the convex nasal cavities.

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