Standing chair characterized because it comprises: - A support base (1). - A vertical section (2) for the feet adjustable in angulation and in height and joined to the support base (1). - A section of seat (3) joined in an articulated manner to the upper end of the vertical section (2) by means of a joint (13). - A backrest section (4) joined in an articulated manner to the seat (3) in its final section, by means of a joint (13). - A series of means to hold the user's legs and chest. - On the vertical section (2) there is mounted a battery (8) and a motor (9) in charge of the drive of the joint (13) between the vertical section (2) and the stretch of feel (3) and the joint (13) between this stretch of grasping (3) and the vertical section (2). (Machine-translation by Google Translate, not legally binding)1. Silla de bipedestación caracterizada porque comprende: - Una base de soporte (1). - Un tramo vertical (2) para los pies regulable en angulación y en altura y unido a la base de soporte (1). - Un tramo de asiento (3) unido de manera articular con el extremo superior del tramo vertical (2) mediante una unión articular (13). - Un tramo de respaldo (4) unido de manera articular con el asiento (3) en su tramo final, mediante una unión articular (13). - Una serie de medios para sujetar las piernas y el pecho del usuario. - Sobre el tramo vertical (2) hay montada una batería (8) y un motor (9) encargado del accionamiento de la unión articular (13) entre el tramo vertical (2) y el tramo de siento (3) y la unión articular (13) entre este tramo de asiendo (3) y el tramo vertical (2).