Federal University of Rio de Janeiro, Brazil.
Braz J Otorhinolaryngol. 2010 Nov-Dec;76(6):683-6. doi: 10.1590/S1808-86942010000600002.
Mouth-breathing children have changes in their stomatognathic system, which result in head projection, stress increase in the scapular belt muscles and postural adaptations. Although thoracic shape and posture can influence ventilatory dynamics, we didn't find studies addressing pulmonary function of mouth-breathing children.
this study aimed at analyzing the posture of mouth-breathing children, and studying the existence of correlations between posture and pulmonary volumes.
prospective, observational and cross-sectional study, where the posture and pulmonary function of 17 mouth-breathing children and of 17 nasal-breathing children were evaluated by means of photogrammetry and forced spirometry.
when compared to nasal-breathing, mouth-breathing subjects presented an increment in head projection and cervical lordosis, forwarded gravity center and reduced pulmonary volumes. There was an association between head projection and forced vital capacity, and between postural alterations and age.
mouth-breathing children have postural alterations which increases with age and also reduced spirometry values. The vital capacity reduction correlates negatively with head projection.
本研究旨在分析口呼吸儿童的姿势，并研究姿势与肺容量之间是否存在相关性。
这是一项前瞻性、观察性和横断面研究，通过摄影测量法和强制肺活量测定法评估了 17 名口呼吸儿童和 17 名鼻呼吸儿童的姿势和肺功能。
与鼻呼吸相比，口呼吸组的头部前倾和颈椎前凸增加，重力中心向前移动，肺容量减少。头部前倾与用力肺活量之间存在关联，而姿势改变与年龄有关。
口呼吸儿童存在姿势改变，且随着年龄的增长而增加，同时肺活量值也降低。肺活量减少与头部前倾呈负相关。
