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Shoulder abduction torque steadiness is preserved in subacromial impingement syndrome

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Abstract

This study compared peak torque and torque steadiness during isometric abduction in subjects with subacromial impingement syndrome (SIS) and those with no upper limb disorders. The SIS group consisted of 27 subjects (33.48 ± 9.94 years) with unilateral SIS. The control group consisted of 23 healthy and active subjects (32.26 ± 9.04 years). Peak torque and torque steadiness were measured during isometric abduction (80º in the scapular plane) of the shoulder. Standard deviation, coefficient of variation, stability time, median frequency, and relative power were measured from the steadiness trials. There were neither significant interactions between group and side (P > 0.05), nor were there significant main effects of group and side (P > 0.05) for all variables analyzed. The results of this study showed that steadiness is preserved by SIS during isometric abduction of the shoulder.

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Acknowledgments

The authors are deeply grateful to the volunteers who participated in this study. Paula Rezende Camargo was the recipient of research from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior. Mariana Arias Avila and Ana Beatriz de Oliveira were the recipients of research fellowships from Fundação de Amparo à Pesquisa do Estado de São Paulo. The authors also want to thank Paula Ludewig, PhD, and Vandana Phadke for comments on the manuscript.

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Authors and Affiliations

  1. Department of Physical Therapy, Federal University of São Carlos, Rodovia Washington Luís, km 235, São Carlos, SP, 13565-905, Brazil

    Paula Rezende Camargo, Mariana Arias Avila, Ana Beatriz de Oliveira, Naoe Aline Asso & Tania de Fátima Salvini

  2. Department of Statistics, Federal University of São Carlos, Rodovia Washington Luís, km 235, São Carlos, SP, 13565-905, Brazil

    Benedito Galvão Benze

Authors
  1. Paula Rezende Camargo
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  2. Mariana Arias Avila
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  3. Ana Beatriz de Oliveira
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  4. Naoe Aline Asso
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  5. Benedito Galvão Benze
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  6. Tania de Fátima Salvini
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Correspondence to Tania de Fátima Salvini.

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Camargo, P.R., Avila, M.A., de Oliveira, A.B. et al. Shoulder abduction torque steadiness is preserved in subacromial impingement syndrome. Eur J Appl Physiol 106, 381–387 (2009). https://doi.org/10.1007/s00421-009-1030-9

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  • DOI: https://doi.org/10.1007/s00421-009-1030-9

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