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The influence of biofeedback training on trapezius activity and rest during occupational computer work: a randomized controlled trial

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Abstract

The aim of this study was to investigate effects of biofeedback training on trapezius activity and rest (gaps) during occupational computer work. A randomized controlled trial with 164 computer workers was performed. Two groups working with computer mouse more than 50% (n = 64) and less than 25% (n = 49) of their work time performed five sessions with unilateral electromyographical (EMG) biofeedback from the dominant trapezius during computer work. A third group working with computer mouse more than 50% of their work time (n = 51) served as controls. Bipolar EMG from the bilateral upper trapezius muscles during normal computer work was recorded. Changes in discomfort/pain were not recorded. The biofeedback training reduced activity (P < 0.05), and increased the frequency of short (P < 0.05) and long (P < 0.05) gaps, and the relative rest time (P < 0.05) of the trapezius during computer work. By improving trapezius inactivity during computer work, biofeedback training may have the potential to prevent trapezius myalgia in computer workers.

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Authors and Affiliations

  1. National Research Centre for the Working Environment, Lersø Parkallé 105, 2100, Copenhagen Ø, Denmark

    A. Holtermann & A. K. Blangsted

  2. Institute of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark

    K. Søgaard

  3. Grontmij Carlbro, Glostrup, Denmark

    H. Christensen

  4. Bente Dahl Ergonomic Consultancy, Copenhagen, Denmark

    B. Dahl

Authors
  1. A. Holtermann
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  2. K. Søgaard
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  3. H. Christensen
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  4. B. Dahl
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  5. A. K. Blangsted
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Correspondence to A. Holtermann.

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Holtermann, A., Søgaard, K., Christensen, H. et al. The influence of biofeedback training on trapezius activity and rest during occupational computer work: a randomized controlled trial. Eur J Appl Physiol 104, 983–989 (2008). https://doi.org/10.1007/s00421-008-0853-0

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  • DOI: https://doi.org/10.1007/s00421-008-0853-0

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