Archives of Physical Medicine and Rehabilitation
Volume 87, Issue 7 , Pages 923-927 , July 2006

Electromyographic Activity in the Immobilized Shoulder Girdle Musculature During Scapulothoracic Exercises

  • Jay Smith, MD

      Affiliations

    • Department of Physical Medicine and Rehabilitation, Mayo Clinic College of Medicine, Rochester, MN
    • Mayo Clinic Sports Medicine Center, Rochester, MN
    • Corresponding Author InformationReprint requests to Jay Smith, MD, Dept of Physical Medicine and Rehabilitation, 200 First St SW, Rochester, MN 55905
    • ,
  • Diane L. Dahm, MD

      Affiliations

    • Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN
    • ,
  • Kenton R. Kaufman, PhD

      Affiliations

    • Department of Orthopedic Surgery, Mayo Clinic Motion Analysis Laboratory, Rochester, MN
    • ,
  • Andrea J. Boon, MD

      Affiliations

    • Department of Physical Medicine and Rehabilitation, Mayo Clinic College of Medicine, Rochester, MN
    • ,
  • Edward R. Laskowski, MD

      Affiliations

    • Department of Physical Medicine and Rehabilitation, Mayo Clinic College of Medicine, Rochester, MN
    • Mayo Clinic Sports Medicine Center, Rochester, MN
    • ,
  • Brian R. Kotajarvi, PT

      Affiliations

    • Department of Orthopedic Surgery, Mayo Clinic Motion Analysis Laboratory, Rochester, MN
    • ,
  • David J. Jacofsky, MD

      Affiliations

    • The CORE Institute, Center for Orthopedic Research and Education, Sun City West, AZ.

  • Image Result

    Peak 1-second normalized electromyographic activity from the 11 study muscles (N=5 subjects) during 6 scapulothoracic exercises. NOTE. Values are mean ± standard error of the mean. Abbreviations: AD,

    Peak 1-second normalized electromyographic activity from the 11 study muscles (N=5 subjects) during 6 scapulothoracic exercises. NOTE. Values are mean ± standard error of the mean. Abbreviations: AD, anterior deltoid; BB, biceps; IS, infraspinatus; LT, lower trapezius; MD, middle deltoid; MT, middle trapezius; PD, posterior deltoid; SA, serratus anterior; SCCCW, scapular clock counterclockwise; SCCW, scapular clock clockwise; SCD, scapular depression; SCE, scapular elevation; SCP, scapular protraction; SCR, scapular retraction; SS, supraspinatus; UT, upper trapezius.

  • Image Result
    Side view demonstrating how holding the hand away from the abdomen during the scapulothoracic exercises may reduce the electromyographic activity in the upper subscapularis to safer levels.

    Side view demonstrating how holding the hand away from the abdomen during the scapulothoracic exercises may reduce the electromyographic activity in the upper subscapularis to safer levels.

 Supported by the Mayo Foundation and the Physiatric Association of Spine, Sports, and Occupational Rehabilitation.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 or upon any organization with which the authors are associated.

PII: S0003-9993(06)00313-3

doi: 10.1016/j.apmr.2006.03.013

Archives of Physical Medicine and Rehabilitation
Volume 87, Issue 7 , Pages 923-927 , July 2006

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