Anticipatory postural adjustments in children with hemiplegia and diplegia
نویسندگان
چکیده
منابع مشابه
Two aspects of feedforward postural control: anticipatory postural adjustments and anticipatory synergy adjustments.
We used the framework of the uncontrolled manifold hypothesis to explore the relations between anticipatory synergy adjustments (ASAs) and anticipatory postural adjustments (APAs) during feedforward control of vertical posture. ASAs represent a drop in the index of a multimuscle-mode synergy stabilizing the coordinate of the center of pressure in preparation to an action. ASAs reflect early cha...
متن کاملAnticipatory Postural Adjustments in Dart Throwing
The aim of this study was to explore the effects of accuracy constraints on the characteristics of anticipatory postural adjustments (APA) in a task that involves a movement consisting of a controlled phase and a ballistic phase. It was hypothesized that APA scaling with task parameters (target size) would be preserved even when the task is performed by muscles that have no direct effects on AP...
متن کاملAnticipatory postural adjustments in conditions of postural instability.
OBJECTIVES The purpose of this study was to investigate anticipatory postural adjustments (APAs) in standing subjects who performed a standard motor action triggering a standard postural perturbation (releasing a 2.2 kg load from extended arms) in conditions of different stability requirements. METHODS The degree of stability was varied either by balancing on special boards with long and narr...
متن کاملAnticipatory postural adjustments in a bimanual load-lifting task in children with Duchenne muscular dystrophy.
We investigated the consequences of a progressive damage to the muscular system on the organization of anticipatory postural adjustments (APA) in children with Duchenne muscular dystrophy (DMD). We used a bimanual load-lifting task requiring the stabilization of the forearm position despite its voluntary or imposed unloading. Eight children with DMD from 4 to 11 years of age were compared to ei...
متن کاملAdaptive changes in anticipatory postural adjustments with novel and familiar postural supports.
Anticipatory postural adjustments (APAs) serve to stabilize posture prior to initiation of voluntary movement. This study examined the effects of changes in postural support on APAs using novel and familiar support paradigms. We also investigated whether postural strategies were refined with practice and how the CNS responded when multiple supports were available. Twelve healthy subjects stood ...
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ژورنال
عنوان ژورنال: Journal of Electromyography and Kinesiology
سال: 2011
ISSN: 1050-6411
DOI: 10.1016/j.jelekin.2011.08.013