Archives of Physical Medicine and Rehabilitation
Volume 89, Issue 7 , Pages 1314-1322 , July 2008

Activation Characteristics of Trunk Muscles During Cyclic Upper-Body Perturbations Caused by an Oscillating Pole

Presented in part as a poster to the Deutsche Physiologische Gesellschaft, March 29, 2006, Munich, Germany.

  • Christoph Anders, PhD

      Affiliations

    • Corresponding Author InformationReprint requests to Christoph Anders, PhD, Clinic for Trauma-, Hand- and Reconstructive Surgery, Division for Motor Research, Pathophysiology and Biomechanics, Friedrich-Schiller-University Jena, D-07740 Jena, Germany
    • ,
  • Beatrix Wenzel, MD
    • ,
  • Hans C. Scholle, PhD

  • Image Result

    Subject using the device. (A) Horizontal oscillation, (B) vertical oscillation, and (C) positions of the adjustable weights. Oscillation frequencies can be tuned by moving the adjustable weights. Weig

    Subject using the device. (A) Horizontal oscillation, (B) vertical oscillation, and (C) positions of the adjustable weights. Oscillation frequencies can be tuned by moving the adjustable weights. Weight positions and their respective oscillation frequencies are given.

  • Image Result
    Electrode positions for all investigated trunk muscles. Detailed description for positioning is given in table 2. Positions were chosen according Hermens48 and Ng49 and colleagues.

    Electrode positions for all investigated trunk muscles. Detailed description for positioning is given in table 2. Positions were chosen according Hermens48 and Ng49 and colleagues.

  • Image Result
    Grand average surface electromyographic (SEMG) curves of trunk muscles during the applied oscillation frequencies in horizontal (left column) and vertical (right column) planes. Data from both sexes w

    Grand average surface electromyographic (SEMG) curves of trunk muscles during the applied oscillation frequencies in horizontal (left column) and vertical (right column) planes. Data from both sexes were pooled. Positions of the pole ends during the normalized oscillation cycle are indicated. Abbreviations: EO, external oblique; ES, erector spinae; IO, internal oblique; MF, multifidus; RA, rectus abdominis.

  • Image Result
    Coordination patterns of back muscles for oscillations in horizontal (left column) and vertical (right column) planes. Influence of oscillation frequency was tested by using the nonparametric Friedman

    Coordination patterns of back muscles for oscillations in horizontal (left column) and vertical (right column) planes. Influence of oscillation frequency was tested by using the nonparametric Friedman ANOVA by ranks. *Significant differences of P<.05. Data from both sides and sexes were pooled. Positions of the pole ends during the normalized oscillation cycle are indicated.

 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(08)00271-2

doi: 10.1016/j.apmr.2007.11.047

Archives of Physical Medicine and Rehabilitation
Volume 89, Issue 7 , Pages 1314-1322 , July 2008

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