Archives of Physical Medicine and Rehabilitation
Volume 88, Issue 4 , Pages 456-463 , April 2007

Upper-Limb Joint Power and Its Distribution in Spinal Cord Injured Wheelchair Users: Steady-State Self-Selected Speed Versus Maximal Acceleration Trials

  • Robert Price, MSME

      Affiliations

    • Department of Rehabilitation Medicine, University of Washington, Seattle, WA
    • Corresponding Author InformationReprint requests to Robert Price, MSME, Dept of Rehabilitation Medicine, University of Washington, Box 356490, 1959 NE Pacific St, Seattle, WA 98053
    • ,
  • Zachary R. Ashwell, MSME

      Affiliations

    • Department of Rehabilitation Medicine, University of Washington, Seattle, WA
    • ,
  • Michael W. Chang, MD, PhD

      Affiliations

    • Department of Rehabilitation Medicine, University of Washington, Seattle, WA
    • ,
  • Michael L. Boninger, MD

      Affiliations

    • Human Engineering Research Laboratories, Veterans Affairs Pittsburgh HealthCare System, Pittsburgh, PA
    • Departments of Rehabilitation Science and Technology and Bioengineering, University of Pittsburgh, Pittsburgh, PA
    • Department of Physical Medicine and Rehabilitation, University of Pittsburgh Medical Center Health System, Pittsburgh, PA
    • ,
  • Alicia M. Koontz, PhD, RET

      Affiliations

    • Human Engineering Research Laboratories, Veterans Affairs Pittsburgh HealthCare System, Pittsburgh, PA
    • Departments of Rehabilitation Science and Technology and Bioengineering, University of Pittsburgh, Pittsburgh, PA
    • ,
  • Sue Ann Sisto, PT, MA, PhD

      Affiliations

    • Department of Physical Medicine and Rehabilitation, University of Medicine and Dentistry of New Jersey, New Jersey Medical School, Newark, NJ
    • Kessler Medical Rehabilitation Research and Education Corp, West Orange, NJ.

  • Image Result

    Reflective markers applied to volunteer, SmartWheel, and passive dual-roller system.

    Reflective markers applied to volunteer, SmartWheel, and passive dual-roller system.

  • Image Result

    (A) Power versus time for the shoulder joint (solid) and total upper-limb power (dashed) at steady-state, self-selected speed. Step function indicates when a propulsion moment is applied to the SmartW

    (A) Power versus time for the shoulder joint (solid) and total upper-limb power (dashed) at steady-state, self-selected speed. Step function indicates when a propulsion moment is applied to the SmartWheel. (B) Power versus time for the elbow joint (solid) and total upper-limb power (dashed) at steady-state, self-selected speed. Step function indicates when a propulsion moment is applied to the SmartWheel. (C) Power versus time for the wrist joint (solid) and total upper-limb power (dashed) at steady-state, self-selected speed. Step function indicates when a propulsion moment is applied to the SmartWheel. Abbreviations: Pwr, power; SW, SmartWheel; UE, upper extremity.

  • Image Result
    (A) Power versus time for the shoulder joint (solid) and total upper-limb power (dashed) under acceleration. Step function indicates when a propulsion moment is applied to the SmartWheel. (B) Power ve

    (A) Power versus time for the shoulder joint (solid) and total upper-limb power (dashed) under acceleration. Step function indicates when a propulsion moment is applied to the SmartWheel. (B) Power versus time for the elbow joint (solid) and total upper-limb power (dashed) under acceleration. Step function indicates when a propulsion moment is applied to the SmartWheel. (C) Power versus time for the wrist joint (solid) and total upper-limb power (dashed) under acceleration. Step function indicates when a propulsion moment is applied to the SmartWheel.

  • Image Result
    Joint power fractions (median and quartiles) at time of upper-limb peak power for SSS and MAC trials.

    Joint power fractions (median and quartiles) at time of upper-limb peak power for SSS and MAC trials.

  • Image Result
    Joint power fractions (median and quartiles) at time of upper-limb pre-peak power for SSS and MAC trials.

    Joint power fractions (median and quartiles) at time of upper-limb pre-peak power for SSS and MAC trials.

 Supported by the National Institute on Disability and Rehabilitation Research (grant no. H133A011107).

 No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the author(s) or upon any organization with which the author(s) is/are associated.

PII: S0003-9993(07)00024-X

doi: 10.1016/j.apmr.2007.01.016

Archives of Physical Medicine and Rehabilitation
Volume 88, Issue 4 , Pages 456-463 , April 2007

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