Effects of object size on intralimb and interlimb coordination during a bimanual prehension task in patients with left cerebral vascular accidents
Journal
Motor Control
Journal Volume
12
Journal Issue
4
Pages
296-310
Date Issued
2008
Author(s)
Abstract
Stroke patients are often left with hemiplegia or hemiparesis of the upper extremities, severely limiting the ability to perform bimanual and functional activities. No studies have investigated how stroke patients adapt their movements to changes in object size in functionally asymmetric bimanual tasks. The influence of object size on intralimb and interlimb coordination during an asymmetrical, functional bimanual task was examined in patients with left cerebral vascular accidents (LCVA) and healthy controls. Fourteen LCVA patients and 13 age-matched controls were instructed to reach to grasp a large and a small jar with the right/ affected hand and to open the cap with the other hand. Movement kinematics was analyzed for intralimb coordination (spatial and temporal planning of reaching and grasping) and interlimb coordination (bimanual synchronization and temporal association of the hands). The results demonstrate a spatial adaptation of reaching in the affected hand to the object size and deficits in temporal planning of grasping with the affected hand to object size in the stroke patients. Movement adaptations of the unaffected hand in the stroke patients were similar to those in the healthy adults. Bimanual coordination was independent of object size for both groups. ? 2008 Human Kinetics, Inc.
Subjects
Bimanual coordination; Object size; Reach to grasp; Stroke
SDGs
Other Subjects
adult; aged; article; cerebrovascular accident; clinical article; controlled study; female; grip strength; human; male; motor coordination; motor performance; movement perception; musculoskeletal function; stroke patient; task performance
Type
journal article