Archives of Physical Medicine and Rehabilitation
Volume 90, Issue 6 , Pages 927-933 , June 2009

Speed of Voluntary Stepping in Chronic Stroke Survivors Under Single- and Dual-Task Conditions: A Case-Control Study

  • Itshak Melzer, PhD

      Affiliations

    • Schwartz Movement Analysis & Rehabilitation Laboratory, Department of Physical Therapy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
    • Corresponding Author InformationReprint requests to Itshak Melzer, PhD, PT, Schwartz Movement Analysis & Rehabilitation Laboratory, Dept of Physical Therapy, Faculty of Health Sciences, Ben-Gurion University of the Negev, PO Box 653, Beer-Sheva 84105, Israel
    • ,
  • Irit Tzedek, MPT

      Affiliations

    • Schwartz Movement Analysis & Rehabilitation Laboratory, Department of Physical Therapy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
    • Hydrotherapy Center in Sha'ar HaNegev, Israel
    • ,
  • Michal Or, PT

      Affiliations

    • Schwartz Movement Analysis & Rehabilitation Laboratory, Department of Physical Therapy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
    • ,
  • Gali Shvarth, PT

      Affiliations

    • Schwartz Movement Analysis & Rehabilitation Laboratory, Department of Physical Therapy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
    • ,
  • Oranit Nizri, PT

      Affiliations

    • Schwartz Movement Analysis & Rehabilitation Laboratory, Department of Physical Therapy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
    • ,
  • Keren Ben-Shitrit, PT

      Affiliations

    • Schwartz Movement Analysis & Rehabilitation Laboratory, Department of Physical Therapy, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
    • ,
  • Lars E. Oddsson, PhD

      Affiliations

    • NeuroMuscular Research Center, Boston University, Boston, MA
    • Sister Kenny Rehabilitation Institute, Sister Kenny Research Center, Minneapolis, MN

  • Image Result

    Example of forward step execution data for a subject during single- (bottom) and dual-task (top) conditions. The following events are marked: tap cue (C); initial lateral deviation of center of pressu

    Example of forward step execution data for a subject during single- (bottom) and dual-task (top) conditions. The following events are marked: tap cue (C); initial lateral deviation of center of pressure toward the swinging foot (A); foot off (FO); and foot contact (FC) with the ground completing the step. Note the differences in step reaction times between the 2 task conditions. Abbreviations: COPx, mediolateral center of pressure; Fy, ground reaction forces (shear forces) in anteroposterior direction; Fz, vertical ground reaction forces.

  • Image Result
    The interference effect of modified Stroop test in chronic stroke patients and healthy controls (dual-task stepping normalized to single-task stepping). Values represent ratios (percentage ± SD) of th

    The interference effect of modified Stroop test in chronic stroke patients and healthy controls (dual-task stepping normalized to single-task stepping). Values represent ratios (percentage ± SD) of the average value of 2 step directions in dual task and the average value of 2 step directions in single task. No significant differences were found between groups.

 No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit on the authors or on any organization with which the authors are associated.

PII: S0003-9993(09)00155-5

doi: 10.1016/j.apmr.2008.12.012

Archives of Physical Medicine and Rehabilitation
Volume 90, Issue 6 , Pages 927-933 , June 2009

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