Characteristic features of disorders of the upright posture in patients with poststroke hemipareses

Ustinova, K.I.; Ioffe, M.E.; Chernikova, L.A.

Авторы: Ustinova K.I., Ioffe M.E., Chernikova L.A.
Журнал: Human Physiology
Том: 29
Номер: 5
Год издания: 2003
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 642
Последняя страница: 648
DOI: 10.1023/a:1025832420924
Аннотация: Characteristic features of upright posture maintenance and mechanisms of postural disorders in poststroke hemiparetic patients were studied using a bilateral force platform. The following features of postural disorders were revealed in the patients tested: an increase in the velocity and amplitude of the center-of-pressure (CP) sway as compared to in healthy subjects, an absolute decrease in the half-cycles of the CP sway, asymmetry of weight bearing by both feet, and a shift of the center of pressure of an affected foot towards the toe. The disturbance of stability of the vertical posture in such patients is to a greater extent associated with weight-bearing asymmetry. It was shown that the character of the CP sway is mainly determined by a disorder of the sensory motor control, whereas damage to the efferent pathways is responsible for the postural asymmetry. Increase in the muscle tone restricts the sway amplitude. Thus, several forms of postural instability are characteristic of hemiparetic patients. Predominantly sensory, motor, or tonic disorders are responsible for these disturbances of stability.
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Characteristic features of disorders of the upright posture in patients with poststroke hemiparesesстатья

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