Giovanni A, Assaiante C, Galmiche A, Vaugoyeau M, Ouaknine M, Le Huche F
CHU Timone, Laboratoire d'Audio-Phonologie Expérimentale et Clinique de l'Université de la Méditerranée, Service d'ORL, EA-2668. 13385 Marseille cedex 5, France.
Rev Laryngol Otol Rhinol (Bord). 2006;127(5):285-91.
One of the well-known characteristics of vocal forcing is postural with an increase in the antero-posterior movements of the trunk and head during phonation.
we conceived different physiological experiments on normal subjects to explore in an objective way these movements.
A series of experiments using a platform of posturography confirmed that there is an increase in the tensions in the muscles implied in the posture when the subject forces his voice because of an ambient noise. This increase is characterized by the index VCOP rms (variance of the displacement of the center of pressure in upright position) which passes from 13.19 in normal voice to 18.63 in forced voice. A complementary study was carried out with an equipment of analysis of the movements (ELITE).
We could, thus, confirm the existence of the contemporary antero-posterior movements of vocal forcing. The discussion concerns the application perspectives of these experimental knowledge in the clinical field of the dysfunctional dysphonia.
发声用力的一个众所周知的特征是姿势性的，即在发声时躯干和头部的前后运动增加。
我们针对正常受试者设计了不同的生理学实验，以客观地探究这些运动。
一系列使用姿势描记平台的实验证实，当受试者因周围噪音而用力发声时，与姿势相关的肌肉张力会增加。这种增加以VCOP均方根指数（直立位压力中心位移的方差）为特征，该指数从正常发声时的13.19增加到用力发声时的18.63。使用运动分析设备（ELITE）进行了一项补充研究。
因此，我们可以证实发声用力时存在同时发生的前后运动。讨论涉及这些实验知识在功能性发声障碍临床领域的应用前景。
