Shturman-Ellstein R, Zeballos R J, Buckley J M, Souhrada J F
Am Rev Respir Dis. 1978 Jul;118(1):65-73. doi: 10.1164/arrd.1978.118.1.65.
In the first step of a study of the relation of nasal and oral breathing during moderate treadmill exercise to the onset of bronchoconstriction in young patients with perennial bronchial asthma, it was observed that most subjects spontaneously breathed with their mouths open when instructed to breathe "naturally." Subsequently, when they were required to breathe only through the nose during the exercise, an almost complete inhibition of the postexercise bronchoconstrictive airway response was demonstrated. When instructed to breathe only through the mouth during exercise, an increased bronchoconstrictive airway response occurred, as measured by spirometry, flow-volume relationships, and body plethysmography. These findings suggest that the nasopharynx and the oropharynx play important roles in the phenomenon of exercise-induced bronchoconstriction.
在一项针对常年性支气管哮喘年轻患者在中度跑步机运动期间鼻呼吸和口呼吸与支气管收缩发作关系的研究的第一步中，观察到大多数受试者在被指示“自然”呼吸时会自动张口呼吸。随后，当要求他们在运动期间仅通过鼻子呼吸时，运动后支气管收缩性气道反应几乎完全受到抑制。当在运动期间被指示仅通过嘴呼吸时，通过肺活量测定、流量-容积关系和体容积描记法测量，出现了增强的支气管收缩性气道反应。这些发现表明，鼻咽和口咽在运动诱发的支气管收缩现象中起重要作用。
