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.
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. antoine.giovanni@ap-hm.fr
