WALKING PATTERNS IN PARKINSON'S DISEASE WITH AND WITHOUT FREEZING OF GAIT
Identifieur interne : 000F40 ( PascalFrancis/Curation ); précédent : 000F39; suivant : 000F41WALKING PATTERNS IN PARKINSON'S DISEASE WITH AND WITHOUT FREEZING OF GAIT
Auteurs : W. Nanhoe-Mahabier [Pays-Bas] ; A. H. Snijders [Pays-Bas] ; A. Delval [Pays-Bas, France] ; V. Weerdesteyn [Pays-Bas] ; J. Duysens [Belgique] ; S. Overeem [Pays-Bas] ; B. R. Bloem [Pays-Bas]Source :
- Neuroscience [ 0306-4522 ] ; 2011.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
The pathophysiology underlying freezing of gait (FOG) in Parkinson's disease remains incompletely understood. Patients with FOG ("freezers") have a higher temporal variability and asymmetry of strides compared to patients without FOG ("non-freezers"). We aimed to extend this view, by assessing spatial variability and asymmetry of steps and interlimb coordination between the upper and lower limbs during gait. Twelve freezers, 15 non-freezers, and 15 age-matched controls were instructed to walk overground and on a treadmill. Kinematic data were recorded with a motion analysis system. Both freezers and non-freezers showed an increased spatial variability of leg movements compared to controls. In addition, both patient groups had a deficit in interlimb coordination, not only between ipsilateral arms and legs, but also between diagonally positioned limbs. The only difference between freezers and non-freezers was a decreased step length during treadmill walking. We conclude that parkinsonian gait-regardless of FOG-is irregular, not only in the legs, but also with respect to interlimb coordination between the arms and legs. FOG is reflected by abnormal treadmill walking, presumably because this provides a greater challenge to the defective supraspinal control than overqround walking, hampering the ability of freezers to increase their stride length when necessary.
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<front><div type="abstract" xml:lang="en">The pathophysiology underlying freezing of gait (FOG) in Parkinson's disease remains incompletely understood. Patients with FOG ("freezers") have a higher temporal variability and asymmetry of strides compared to patients without FOG ("non-freezers"). We aimed to extend this view, by assessing spatial variability and asymmetry of steps and interlimb coordination between the upper and lower limbs during gait. Twelve freezers, 15 non-freezers, and 15 age-matched controls were instructed to walk overground and on a treadmill. Kinematic data were recorded with a motion analysis system. Both freezers and non-freezers showed an increased spatial variability of leg movements compared to controls. In addition, both patient groups had a deficit in interlimb coordination, not only between ipsilateral arms and legs, but also between diagonally positioned limbs. The only difference between freezers and non-freezers was a decreased step length during treadmill walking. We conclude that parkinsonian gait-regardless of FOG-is irregular, not only in the legs, but also with respect to interlimb coordination between the arms and legs. FOG is reflected by abnormal treadmill walking, presumably because this provides a greater challenge to the defective supraspinal control than overqround walking, hampering the ability of freezers to increase their stride length when necessary.</div>
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