Effect of scapular stabilization during cross-body stretch on the hardness of infraspinatus, teres minor, and deltoid muscles: An ultrasonic shear wave elastography study.

• Umehara, Jun

  Human Health Science, Graduate School of Medicine, Kyoto University

• Hasegawa, Satoshi

  Human Health Science, Graduate School of Medicine, Kyoto University

• Nakamura, Masatoshi

  Human Health Science, Graduate School of Medicine, Kyoto University・Faculty of Health and Sports Science, Doshisha University

• Nishishita, Satoru

  Human Health Science, Graduate School of Medicine, Kyoto University

• Umegaki, Hiroki

  Human Health Science, Graduate School of Medicine, Kyoto University

• Tanaka, Hiroki

  Human Health Science, Graduate School of Medicine, Kyoto University

• Fujita, Kosuke

  Human Health Science, Graduate School of Medicine, Kyoto University

• Kusano, Ken

  Human Health Science, Graduate School of Medicine, Kyoto University

• Ichihashi, Noriaki

  Human Health Science, Graduate School of Medicine, Kyoto Universit

Abstract

Background: Posterior shoulder tightness is a contributing factor to shoulder injuries. Cross-body stretch is a method frequently prescribed to stretch the posterior shoulder structures. This stretching is performed horizontally adducting the shoulder with or without manual stabilization of the scapula by the therapist. However, no studies have investigated the effect of scapular stabilization during cross-body stretch using shear elastic modulus as an index of muscle hardness in vivo. Objectives: The aim of this study was to quantitatively examine, using ultrasonic shear wave elastography, whether scapular stabilization during cross-body stretch effectively decreased the hardness of the infraspinatus, the teres minor, or the posterior portion of the deltoid muscles. Design: A randomized, repeated-measures, cross-over design. Method: Twenty healthy men participated in this study. The shear elastic modulus of the teres minor, the superior and inferior portions of the infraspinatus, and the posterior portion of the deltoid were measured before, and immediately after cross-body stretch with and without scapular stabilization. Results: The shear elastic modulus of the superior and inferior portions of the infraspinatus decreased significantly after cross-body stretch with scapular stabilization, but there was no significant change in the shear modulus of the measured muscles after cross-body stretch without scapular stabilization. Conclusions: Our results suggest that manual scapular stabilization during cross-body stretch effectively decreases the hardness of the infraspinatus muscle.

Journal

• Musculoskeletal science & practice

  Musculoskeletal science & practice 27 91-96, 2017-02

  Elsevier BV

Keywords

• Shear wave elastography
• Cross-body stretch
• Scapular stabilization

Details

• CRID: 1050282810834281472
• NII Article ID: 120006471141
• ISSN: 24688630
• ISSN: 24687812
• DOI: 10.1016/j.math.2016.10.004
• HANDLE: 2433/231218
• Web Site: https://api.elsevier.com/content/article/PII:S1356689X16307391?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S1356689X16307391?httpAccept=text/plain
• Text Lang: en
• Article Type: journal article
• Data Source:
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  • Crossref
  • CiNii Articles
  • KAKEN