Postural instability is a disabling feature of Parkinson's disease (PD), contributing to recurrent falls and fall-related injuries. The retropulsion test is widely regarded as the gold standard to evaluate postural instability, and is therefore a key component of the neurological examination in PD. Many variants exist, which confuses both clinical practice and research. Here, we evaluate the me...

This study attempted to determine the influence of non-linear visual movements on our capacity to maintain postural control. An 8x8x8 foot CAVE immersive virtual environment was used. Body sway recordings were obtained for both head and lower back (lumbar 2-3) positions. The subjects were presented with visual stimuli for periods of 62.5 seconds. Subjects were asked to stand still on one foot w...

Balance impairment, or postural instability, is a common source of residual physical disability after severe traumatic brain injury (TBI). Standardized functional measures such as the Functional Independence Measure (FIM) do not specifically assess balance. Furthermore, no agreement exists as to the optimal way to objectively measure balance problems in the TBI population. Technological advance...

For progressive diseases, it is often not so straightforward to define an onset time of certain disease condition due to disease fluctuation and clinical measurement variation. When a disease onset is claimed through the first presence of some clinical event which is subject to large measurement error, such onset time could be difficult to interpret if patients can often be seen to "recover" fr...

objectives: deterioration in postural control mechanisms is termed postural instability and results increased postural sway and many laboratory techniques and instruments are characterized by a wide range of neurological signs and symptoms to the medical management. thus the current study designed to assess the reliability of commonly used clinical measures of balance and determined normal valu...

OBJECTIVE To study the characteristics of balance performance in a sample of patients with increasing postural instability after acquired brain injury (ABI) and to establish the clinical utility of a new computerized posturographic system (NedSVE/IBV). METHODS This study included 108 patients with ABI divided into five groups from minimal to severe postural impairment. All patients were asses...

BACKGROUND Gait disorders or postural instability has been done before. However, lack of reviews has addressed the relation between gait and postural stability in Parkinson's disease (PD). AIM The aim was to evaluate the relation between gait parameters and postural stability in early and late stages of PD. MATERIALS AND METHODS The forty-one idiopathic PD patients were divided into two gro...

This paper describe an assistive device for the elderly providing support during the sit to stand transfer. A postural stabilization criteria and an assisting force in case of instability are presented.

The influence of a secondary task on concurrent postural control was explored in twenty-one dyslexic children (mean age: 10.4 ± 0.3 years). Data were compared with twenty age-matched non-dyslexic children. As a secondary task, a modified Stroop test was used, in which words were replaced with pictures of fruits. The postural control of children was recorded in standard Romberg condition as the ...