One vs. Two Hand Use After Stroke: Role of Task Requirements "FSIFall2016"

Recruiting

Phase N/A Results N/A

Trial Description

To further develop interventions, the investigators need a better understanding of which task requirements (i.e. size or weight of object, location in workspace, etc.) drive a person after stroke to use 2 hands (as opposed to 1), and how the severity of their injury impacts this relationship and compare this to reaching in age-matched healthy controls subjects. A better understanding of this relationship will promote more informed development of rehabilitative interventions. This study proposes to explore in people after stroke and healthy controls: i.) how specific functional tasks requirements relate to 1 vs. 2 handed use, and ii.) how stroke severity impacts this arm use. We are proposing to study 15 individuals more than 6 months after stroke in the CSU Motor Behavior Lab for a two x 3 hour session of task-related reaching in sitting and 33 age matched (double sample size) healthy controls. The investigators will systematically vary task requirements (i.e. object size or weight, location in workspace, etc.), and record use of 1 versus 2 hands using videotaping as well as recording of quality of arm movement (kinematics) and muscle activity (EMG) in both arms.

Conditions

Interventions

  • Reaching Behavioral
    Intervention Desc: sitting reaching under various task conditions (size, speed, location)
    ARM 1: Kind: Experimental
    Label: Sitting Reaching
    Description: sitting reaching tasks under different conditions
    ARM 2: Kind: Experimental
    Label: stroke
    Description: individuals chronic (> 6 months) post-stroke
    ARM 3: Kind: Experimental
    Label: age matched health controls
    Description: age matched (double sample size anticipated) healthy controls
  • Kinematic collection while reaching Behavioral
    Intervention Desc: sitting reaching under various task conditions (size, speed, location), told how many & which hand to use, kinematic data collected
    ARM 1: Kind: Experimental
    Label: stroke
    Description: individuals chronic (> 6 months) post-stroke

Trial Population

adults > 18 years old chronic post-stroke with upper extremity paresis yet able to complete a reach-to-grasp task independently with their paretic arm healthy controls > 18 years old (as per above)

Outcomes

Type Measure Time Frame Safety Issue
Primary Hand Use (qualitative analysis of how many hands, which hand used) via video within 1st day session only (assessed w/i 2-3 hour session only)
Primary upper extremity kinematics (peak velocity, index of curvature, total movement time) within 2nd day session only (assessed w/i 2-3 hour session only)

Sponsors