An ultrasound investigation into the morphology of the human abdominal wall uncovers complex deformation patterns during contraction.

European Journal of Applied Physiology
Stephen H M Brown, Stuart M McGill

Abstract

The abdominal wall components, specifically muscle and connective tissue, must meet and accommodate a wide range of force demands for torso movement, spine stabilization, and respiration. It has a composite laminate nature that may lend itself to facilitating the required tissue responses. The purpose of this exploratory study was to examine the deformations of the abdominal wall connective tissues, with a special focus on both the internal oblique aponeurosis and the tendinous intersections of the rectus abdominis, using ultrasound imaging, during relatively simple contractions of the abdominal musculature. There were two main findings of this study: (1) deformations occurred in nearly 50% of contractions that would be characterized by a simultaneous expansion in multiple planes; (2) the laterally generated forces of the oblique and transverse muscles transfer a great deal of force across the rectus abdominis muscle and sheath, leading to a lateral movement of the rectus muscle during abdominal contraction.

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Dec 7, 2007·Journal of Biomechanics·Stephen H M Brown, Stuart M McGill

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Citations

Jan 28, 2016·The Journal of Orthopaedic and Sports Physical Therapy·Cynthia M ChiarelloErin H Hartigan
Jul 14, 2019·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Carmelo PirriPiero Pavan
Mar 30, 2017·Bioactive Materials·Surge KalabaJian Yang
Apr 29, 2021·Musculoskeletal Science & Practice·Jill DepledgeRichard Ellis

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