Research is equivocal regarding endurance performance benefits of external nasal dilators, and currently research focusing on internal nasal dilators is non-existent. Both devices are used within competitive cycling. This study examined the influence of external and internal nasal dilation on cycling economy of motion and 20-km time trial performance.
The study utilized a randomized, counterbalanced cross-over design.
Fifteen trained cyclists completed three exercise sessions consisting of a 15 min standardized warm up and 20-km cycling time trial while wearing either a Breathe Right® external nasal dilator, Turbine® internal nasal dilator or no device (control). During the warm up, heart rate, ratings of perceived exertion and dyspnea and expired gases were collected. During the time trial, heart rate, perceived exertion, and dyspnea were collected at 4-km intervals and mean 20-km power output was recorded.
No differences were observed for mean 20-km power output between the internal (270 ± 45 W) or external dilator (271 ± 44 W) and control (272 ± 44 W). No differences in the economy of motion were observed throughout the 15-min warm up between conditions.
The Turbine® and Breathe Right® nasal dilators are ineffective at enhancing 20-km cycling time trial performance.
To read this article in full you will need to make a payment
Purchase one-time access:Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
One-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:Subscribe to Journal of Science and Medicine in Sport
Already a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
- Oxygen uptake and ventilatory effects of an external nasal dilator during ergometry.Med Sci Sports Exerc. 2000; 32: 1491-1495
- Endurance training of respiratory muscles improves cycling performance in fit young cyclists.BMC Physiol. 2004; 4: 9
- Effect of nostril dilatation on prolonged all-out intermittent exercise performance.J Sports Med Phys Fitness. 2001; 41: 189-195
- Ventilatory muscles during exercise in air and oxygen in normal men.J Appl Physiol Respir Environ Exerc Physiol. 1984; 56: 464-471
- Effect of respiratory muscle fatigue on subsequent exercise performance.J Appl Physiol (1985). 1991; 70: 2059-2065
- Exercise-induced respiratory muscle fatigue: implications for performance.J Appl Physiol (1985). 2008; 104: 879-888
- Exercise-induced arterial hypoxaemia in active young women.Appl Physiol Nutr Metab. 2007; 32: 1263-1273
- Inspiratory muscle fatigue in trained cyclists: effects of inspiratory muscle training.Med Sci Sports Exerc. 2002; 34: 785-792
- New ideas on limitations to VO2 max.Exerc Sport Sci Rev. 2000; 28: 10-14
- Characteristics of nasal airflow and the effect of a nasal dilator in normal human subjects.Respir Physiol. 1999; 115: 95-101
- Effects of an external nasal dilator on the work of breathing during exercise.Med Sci Sports Exerc. 2001; 33: 454-458
- Effects of inspiratory muscle training upon recovery time during high intensity, repetitive sprint activity.Int J Sports Med. 2002; 23: 353-360
- Neural drive to nasal dilator muscles: influence of exercise intensity and oronasal flow partitioning.J Appl Physiol (1985). 1995; 79: 1330-1337
- Nasal airflow dynamics: mechanisms and responses associated with an external nasal dilator strip.Eur Respir J. 2000; 15: 929-936
- Effects of concurrent inspiratory and expiratory muscle training on respiratory and exercise performance in competitive swimmers.Eur J Appl Physiol. 2005; 94: 527-540
- Evaluation of the effectiveness of the external nasal dilator strip in adolescent athletes: a randomized trial.Int J Pediatr Otorhinolaryngol. 2013; 77: 1500-1505
- External nasal dilators: definition, background, and current uses.Int J Gen Med. 2014; 7: 491-504
- Nasal dilator strips delay the onset of oral route breathing during exercise.Can J Appl Physiol. 1999; 24: 538-547
- Effects of the nasal strip and dilator on nasal breathing—a study with healthy subjects.Rhinology. 2004; 42: 122-125
- Psychophysical bases of perceived exertion.Med Sci Sports Exerc. 1982; 14: 377-381
- A comparison of the visual analogue scale and modified Borg scale for the measurement of dyspnoea during exercise.Clin Sci (Lond). 1989; 76: 277-282
- Design and analysis of research on sport performance enhancement.Med Sci Sports Exerc. 1999; 31: 472-485
- Day to day variation in time trial cycling performance.Int J Sports Med. 1992; 13: 467-470
- Physiologic effects of an external nasal dilator.Laryngoscope. 1997; 107: 1235-1238
- Nasal resistance and flow resistive work of nasal breathing during exercise: effects of a nasal dilator strip.J Appl Physiol (1985). 2000; 89: 1114-1122
- Respiratory frequency is strongly associated with perceived exertion during time trials of different duration.J Sports Sci. 2016; 34: 1199-1206
- Oxygen cost of ventilation during incremental exercise to VO2 max.Respirology. 2006; 11: 175-181
- The effect of psychological strategies upon cardiorespiratory and muscular activity during treadmill running.Med Sci Sports Exerc. 1992; 24: 218-225
- Biofeedback and relaxation techniques improves running economy in sub-elite long distance runners.Med Sci Sports Exerc. 1999; 31: 717-722
- Placebo mechanisms across different conditions: from the clinical setting to physical performance.Philos Trans R Soc Lond B Biol Sci. 2011; 366: 1790-1798
Published online: September 01, 2016
Accepted: August 25, 2016
Received in revised form: August 10, 2016
Received: April 29, 2016
© 2016 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.