Archives of Physical Medicine and Rehabilitation
Volume 86, Issue 1 , Pages 26-30 , January 2005

Effect of foot orthotics on quadriceps and gluteus medius electromyographic activity during selected exercises

Presented in part to the National Athletic Trainers’ Association, June 17, 2002, Dallas, TX.

  • Jay Hertel, PhD, ATC

      Affiliations

    • Kinesiology Program, University of Virginia, Charlottesville, VA, USA
    • Corresponding Author InformationReprint requests to Jay Hertel, PhD, ATC, Kinesiology Program, University of Virginia, 210 Emmet St S, PO Box 400407, Charlottesville, VA 22904-4407
    • ,
  • Brent R. Sloss, ATC

      Affiliations

    • Georgia Southern University, Statesboro, GA, USA
    • ,
  • Jennifer E. Earl, PhD, ATC

      Affiliations

    • Department of Human Movement Sciences, College of Health Sciences, University of Wisconsin, Milwaukee, WI, USA.

  • Image Result

    Custom-made closed-kinetic chain device used to collect the MVIC. Subjects pushed maximally into knee and hip extension into the wall with their weight-bearing limb while the straps and platform remai

    Custom-made closed-kinetic chain device used to collect the MVIC. Subjects pushed maximally into knee and hip extension into the wall with their weight-bearing limb while the straps and platform remained in place to ensure isometric contractions.

  • Image Result
    Mean percentage of integrated electromyographic (iEMG) activity relative to MVIC for the (A) vastus medialis muscle and the (B) gluteus medius muscle during the single-leg squat and stepdown activitie

    Mean percentage of integrated electromyographic (iEMG) activity relative to MVIC for the (A) vastus medialis muscle and the (B) gluteus medius muscle during the single-leg squat and stepdown activities. Muscle activity was significantly greater (P<.05) during all 3 orthotic conditions relative to the no-orthotic condition (n=30). Error bars represent 1 standard deviation (SD). *Statistically significant difference.

  • Image Result
    Mean percentage of integrated electromyographic activity relative to MVIC for the vastus lateralis muscle during the vertical jump. Muscle activity was significantly less (P<.05) during all 3 orthotic

    Mean percentage of integrated electromyographic activity relative to MVIC for the vastus lateralis muscle during the vertical jump. Muscle activity was significantly less (P<.05) during all 3 orthotic conditions relative to the no-orthotic condition (n=30). Error bars represent 1 SD. *Statistically significant difference.

 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 authors(s) or upon any organization with which the author(s) is/are associated.

PII: S0003-9993(04)00432-0

doi: 10.1016/j.apmr.2004.03.029

Archives of Physical Medicine and Rehabilitation
Volume 86, Issue 1 , Pages 26-30 , January 2005

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