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MEDICINA DELLO SPORT
A Journal on Sports Medicine
Official Journal of the Italian Sports Medicine Federation
Indexed/Abstracted in: BIOSIS Previews, EMBASE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 0,163
Medicina dello Sport 2013 September;66(3):351-61
language: English, Italian
Effect of the new nasal dilator DAN-Air® on nasal breathing and performance in elite rowers
Di Lieto C. 1, Granata D. 3, Ceroni Compadretti G. 1, Tasca I. 1, Senaldi R. 4, Crisostomi S. 2, Adami P. E. 2, Rizzo M. 2, Spataro A. 2 ✉
1 ENT Operative Unit, AUSL Imola, Imola, Bologna, Italy;
2 Federazione Italiana Canottaggio, Rome;
3 Istituto di Medicina e Scienza dello Sport-CONI – Roma;
4 Istituto Medicina dello Sport- Bologna
Aim: The aim of this paper was to evaluate, in elite athletes, the effect on nasal ventilation and performance of Dan-Air®, a novel commercially available device to be introduced in the nostrils which increases the nasal valve area.
Methods: The study was performed on 20 male athletes of the under-23 Italian Rowing Team during the meeting preceding the U23 Word Rowing Championship 2012. All the athletes underwent an accurate anamnesis, a complete objective ENT examination and a rhinomanometry performed with Rhinopocket® at study entry, first without and subsequently with DAN-AIR. After the basal evaluation, athletes were randomly divided in two groups of 10 subjects. For 10 days athletes of group A trained with device and those of group B trained without device. At the end of this period athletes underwent a maximal 2000-meters rowing ergometer test with determination of plasma lactate and time to finish.
Results: Rhinomanometry demonstrated a significant reduction of total nasal resistance with Dan-Air® and a significant increase of nasal breathing in all the athletes associated with a subjective improvement of nasal breathing. Total inspiratory NARs resulted 0.337±0.11 Pa/cm3/s without Dan-Air® and 0.159±0.13 with Dan-Air®, (Δ52.8%); total expiratory NARs resulted 0.328±0.12 Pa/cm3/s without Dan-Air® and 0.179±0.14 (Δ45.4%) with Dan-Air®. However, no significant differences were found between athletes of group A and group B in both lactate values and time to finish in the maximal rowing-ergometer test.
Conclusion: Dan-Air® is effective in improving nasal ventilation in elite athletes, however, this effect does not translate in performance improvement in the short time.