Document Detail

Coordination between reaching and grasping in patients with hemiparesis and healthy subjects.
MedLine Citation:
PMID:  17908577     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To investigate the coordination of reach-to-grasp components in hemiparetic and healthy subjects. DESIGN: Split-plot repeated-measures design with 3 factors (group, object size, movement speed). SETTING: Movement laboratory. PARTICIPANTS: Twelve hemiparetic and 12 age-matched healthy subjects. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: We used motion analysis to collect information on the kinematic variables of movement duration, peak velocity, peak deceleration, and maximum aperture, and the time of peak velocity, peak deceleration, and maximum aperture expressed as a percentage of movement duration during 32 reaching movements by each subject. We examined the coordination between the 2 components in 2 ways. First, we investigated the correlation between time of hand opening and start of hand transport, and between time of maximum aperture and time of peak deceleration. Second, we compared movements at preferred and fast speeds (manipulation of transport component) and to 2 different-sized cups (manipulation of grasp component). RESULTS: Both groups demonstrated a temporal coupling between grasp and transport components at the start of the reach and at the time of maximum aperture. Both groups increased the aperture of grasp for larger cups and increased the maximum grip aperture, and had a shorter deceleration phase for faster movements. The deceleration phase of the hemiparetic patients was longer than that of the healthy subjects, however, and the components were not as tightly coupled. CONCLUSIONS: The hemiparetic patients, who had a moderate amount of functional recovery, were similar to healthy subjects in their ability to control reach-to-grasp components. Their performance was not as skilled, however.
Paulette M van Vliet; Martin R Sheridan
Related Documents :
12703537 - Method for quantitative estimation of position perception using a joystick during linea...
16261337 - Kinematic and non-kinematic signals transmitted to the cat cerebellum during passive tr...
6842287 - Effects of perturbations on accuracy of arm movements.
23992057 - Superexponential cutoff as a probe of annihilating dark matter.
24770707 - Network interactions explain sensitivity to dynamic faces in the superior temporal sulcus.
21706337 - Development of the casparian strip is delayed by blue light in pea stems.
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of physical medicine and rehabilitation     Volume:  88     ISSN:  0003-9993     ISO Abbreviation:  Arch Phys Med Rehabil     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-10-02     Completed Date:  2007-11-08     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  2985158R     Medline TA:  Arch Phys Med Rehabil     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1325-31     Citation Subset:  AIM; IM    
University of Birmingham, Egbaston, UK.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Case-Control Studies
Hand Strength
Middle Aged
Paresis / psychology,  rehabilitation*
Psychomotor Performance*
Stroke / psychology,  rehabilitation*
Upper Extremity / physiopathology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Fast-track programming and rehabilitation model: a novel approach to postoperative deep brain stimul...
Next Document:  Effects of robot-aided bilateral force-induced isokinetic arm training combined with conventional re...