摘要：Nunes VNG, Barbosa DCS, Damasceno WC, Fonseca MT, Andrade AG, Rocha-Vieira E, Pinto KMC. External Nasal Dilator Strip Does Not Affect Heart Rate, Oxygen Consumption, Ventilation or Rate of Perceived Exertion during Submaximal Exercise. JEPonline 2011;14(1): 11-19. This randomized crossover study investigated the effects of an external nasal dilator strip (ENDS) on heart rate (HR), oxygen consumption (VO2), ventilation (VE) and rate of perceived exertion (RPE) during submaximal exercise. Nine healthy men were submitted to three sessions of submaximal exercise (60% VO2 max, 1 hour) while in use of an ENDS, placebo ENDS or without any device (control). Nasal volume increased with ENDS (p<0.05), whereas no effect was observed with the placebo. No differences (p<0.05) were found between an ENDS, the placebo ENDS and the control with respect to HR, VO2, VE or RPE. In addition, volunteers were asked during tests about which device they believed they were using. During the two exercise sessions with ENDS, 45% of volunteers believed they were using the ENDS, 11% believed they were using placebo and 45% were unsure. During the test with the placebo ENDS, 45% of volunteers were aware that they were using placebo, 33% believed they were using an ENDS and 22% were unsure. External nasal dilator strips do not affect the physiological parameters related to exercise performance, suggesting that the theoretical advantage of the decreased nasal resistance promoted by ENDS may be of little functional importance to most people during exercise.
