Archives of Physical Medicine and Rehabilitation
Volume 88, Issue 7 , Pages 907-915 , July 2007

Reproducibility of Loading Measurements With Skin-Mounted Accelerometers During Walking

  • Tuomas Liikavainio, MD, MSc

      Affiliations

    • Department of Physical and Rehabilitation Medicine, Kuopio University Hospital, Kuopio, Finland
    • Corresponding Author InformationReprint requests to Tuomas Liikavainio, MD, MSc, Dept of Physical and Rehabilitation Medicine, Kuopio University Hospital, PO Box 1777, FIN-70211 Kuopio, Finland
    • ,
  • Timo Bragge

      Affiliations

    • Department of Physics, University of Kuopio, Kuopio, Finland
    • ,
  • Marko Hakkarainen, MSc

      Affiliations

    • Department of Physics, University of Kuopio, Kuopio, Finland
    • ,
  • Jukka S. Jurvelin, PhD

      Affiliations

    • Department of Physics, University of Kuopio, Kuopio, Finland
    • ,
  • Pasi A. Karjalainen, PhD

      Affiliations

    • Department of Physics, University of Kuopio, Kuopio, Finland
    • ,
  • Jari P. Arokoski, MD, DMSc

      Affiliations

    • Department of Physical and Rehabilitation Medicine, Kuopio University Hospital, Kuopio, Finland
    • Institute of Clinical Medicine, University of Kuopio, Kuopio, Finland.

  • Image Result

    Gait parameters defined from contact phase of vertical (Fz) ground reaction force (upper figure) and of az acceleration signals (lower). The initial parts of the signals are on an expanded scale on th

    Gait parameters defined from contact phase of vertical (Fz) ground reaction force (upper figure) and of az acceleration signals (lower). The initial parts of the signals are on an expanded scale on the right demonstrating the definitions of the rate of loading parameters. The ground reaction force of a left limb is demonstrated as a grey line in the upper left figure. Abbreviation: BW, body weight.

  • Image Result
    Gait parameters defined from contact phase of AP (Fx) and ML (Fy) ground reaction forces.

    Gait parameters defined from contact phase of AP (Fx) and ML (Fy) ground reaction forces.

  • Image Result
    Linear correlations between loading parameters of vertical (Fz) ground reaction force and az and ar accelerations during walking with normal speed. (A) Fz1 max and IPAa1z; (B) maximal loading rate (LR

    Linear correlations between loading parameters of vertical (Fz) ground reaction force and az and ar accelerations during walking with normal speed. (A) Fz1 max and IPAa1z; (B) maximal loading rate (LRmax) and ATRmax a1z; (C) average loading rate (LRave) and ATRave a1z; (D) maximal loading rate and ATRave a1z; (E) maximal loading rate and IPAa1z; and (F) LRmax and IPAa1r. Acceleration was measured with the SMAs attached below the knee.

 Supported by the Finnish Cultural Foundation and EVO (grant no. 5960416) from Kuopio University Hospital.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)00260-2

doi: 10.1016/j.apmr.2007.03.031

Archives of Physical Medicine and Rehabilitation
Volume 88, Issue 7 , Pages 907-915 , July 2007

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