Federal University of Minas Gerais, Post Graduate Program in Health Sciences, Faculty of Medicine, Department of Pediatrics, Belo Horizonte, MG, Brazil.
Federal University of Minas Gerais, Post Graduate Program in Health Sciences, Faculty of Medicine, Department of Pediatrics, Belo Horizonte, MG, Brazil; Pontifical Catholic University of Minas Gerais, Department of Physical Education. Belo Horizonte, MG, Brazil.
Int J Pediatr Otorhinolaryngol. 2020 Dec;139:110430. doi: 10.1016/j.ijporl.2020.110430. Epub 2020 Oct 7.
the external nasal dilator (END) has been employed for the purpose of aiding sporting performance. The objective of this study was to evaluate nasal function and cardio-respiratory capacity in healthy adolescent athletes using the END.
double-blind, crossover clinical trial in which adolescents were evaluated while using the experimental and placebo END during physical exercise. Values for peak nasal inspiratory flow (PNIF), nasal resistance (NR) and maximal oxygen uptake (VOmax) were obtained in randomized order. Additionally, the rating of perceived exertion (RPE) after the cardio-respiratory test was assessed.
for the 71 adolescents evaluated, the use of the experimental END, compared to the placebo, produced a significant improvement in values of PNIF (177.4 ± 20.9 L/min and 172.8 ± 20.2 L/min) (p = 0.020), NR (0.24 ± 0.16 and 0.27 ± 0.16) (p = 0.007), VOmax. (39.5 ± 5.2 mL/kg. min-1 and 37.5 ± 5.2 mL/kg. min-1) (p < 0.001) and RPE (6.0 ± 2.2 and 5.5 ± 2.4) (p < 0.001), respectively.
the END reduced NR, increased PNIF and improved VOmax. In addition, it improved RPE after the maximal cardio-respiratory test. The use of the END can significantly improve nasal function, increase cardio-respiratory capacity and reduce rating of perceived exertion during a maximal test involving adolescent athletes.
外部鼻腔扩张器（END）已被用于辅助运动表现。本研究的目的是使用 END 评估健康青少年运动员的鼻腔功能和心肺能力。
双盲、交叉临床试验，青少年在运动时使用实验性和安慰剂 END 进行评估。以随机顺序获得最大鼻吸气流量（PNIF）、鼻腔阻力（NR）和最大摄氧量（VOmax）的值。此外，还评估了心肺测试后的感知用力评分（RPE）。
对于 71 名评估的青少年，与安慰剂相比，使用实验性 END 可显著改善 PNIF（177.4 ± 20.9 L/min 和 172.8 ± 20.2 L/min）（p = 0.020）、NR（0.24 ± 0.16 和 0.27 ± 0.16）（p = 0.007）、VOmax（39.5 ± 5.2 mL/kg.min-1 和 37.5 ± 5.2 mL/kg.min-1）（p < 0.001）和 RPE（6.0 ± 2.2 和 5.5 ± 2.4）（p < 0.001）。
END 降低了 NR，增加了 PNIF，提高了 VOmax。此外，它还改善了最大心肺测试后的 RPE。在涉及青少年运动员的最大测试中，使用 END 可以显著改善鼻腔功能、增加心肺能力并降低感知用力评分。
