Stathopoulos E T, Hoit J D, Hixon T J, Watson P J, Solomon N P
University of Arizona Institute for Neurogenic Communication Disorders, Tucson.
J Speech Hear Res. 1991 Aug;34(4):761-7. doi: 10.1044/jshr.3404.761.
Established procedures for making chest wall kinematic observations (Hoit & Hixon, 1987) and pressure-flow observations (Smitheran & Hixon, 1981) were used to study respiratory and laryngeal function during whispering and speaking in 10 healthy young adults. Results indicate that whispering involves generally lower lung volumes, lower tracheal pressures, higher translaryngeal flows, lower laryngeal airway resistances, and fewer syllables per breath group when compared to speaking. The use of lower lung volumes during whispering than speaking may reflect a means of achieving different tracheal pressure targets. Reductions in the number of syllables produced per breath group may be an adjustment to the high rate of air expenditure accompanying whispering compared to speaking. Performance of the normal subjects studied in this investigation does not resemble that of individuals with speech and voice disorders characterized by low resistive loads.
采用已确立的胸壁运动学观察程序（霍伊特和希克森，1987年）和压力-流量观察程序（史密斯兰和希克森，1981年），对10名健康年轻成年人在低语和说话时的呼吸及喉部功能进行了研究。结果表明，与说话相比，低语时肺容积通常较低，气管压力较低，经喉气流较高，喉气道阻力较低，且每个呼吸组的音节数较少。低语时肺容积低于说话时，这可能反映了实现不同气管压力目标的一种方式。每个呼吸组产生的音节数减少，可能是对低语相比说话时较高空气消耗率的一种调整。本研究中正常受试者的表现与以低阻力负荷为特征的言语和嗓音障碍个体的表现不同。
