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Effects of an acute bout of dynamic stretching on biomechanical properties of the gastrocnemius muscle determined by shear wave elastography

Pamboris, GM, Noorkoiv, M, Baltzopoulos, V, Gokalp, H, Marzilger, R and Mohagheghi, AA (2018) Effects of an acute bout of dynamic stretching on biomechanical properties of the gastrocnemius muscle determined by shear wave elastography. PLoS One, 13 (5). ISSN 1932-6203

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Abstract

Aims The aim of this study was to examine the acute effects of dynamic stretching (DS) exercise on passive ankle range of motion (RoM), resting localized muscle stiffness, as measured by shear wave speed (SWS) of medial gastrocnemius muscle, fascicle strain, and thickness. Methods/Results Twenty-three participants performed a DS protocol. Before and after stretching, SWS was measured in the belly of the resting medial gastrocnemius muscle (MGM) using shear wave elastography. DS produced small improvements in maximum dorsiflexion (+1.5 ±1.5; mean difference ±90% confidence limits) and maximum plantarflexion (+2.3 ±1.8), a small decrease in fascicle strain (-2.6% ±4.4) and a small increase in SWS at neutral resting angle (+11.4% ±1.5). There was also a small increase in muscle thickness (+4.1mm ±2.0). Conclusions Through the use of elastography, this is the first study to suggest that DS increases muscle stiffness, decreases fascicle strain and increases muscle thickness as a result of improved RoM. These results can be beneficial to coaches, exercise and clinical scientists when choosing DS as a muscle conditioning or rehabilitation intervention.

Item Type: Article
Additional Information: Pamboris GM, Noorkoiv M, Baltzopoulos V, Gokalp H, Marzilger R, Mohagheghi AA (2018) Effects of an acute bout of dynamic stretching on biomechanical properties of the gastrocnemius muscle determined by shear wave elastography. PLoS ONE 13(5): e0196724. https://doi.org/10.1371/journal.pone.0196724
Uncontrolled Keywords: MD Multidisciplinary
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sport & Exercise Sciences
Publisher: Public Library of Science
Date Deposited: 25 May 2018 11:11
Last Modified: 28 Sep 2018 08:23
DOI or Identification number: 10.1371/journal.pone.0196724
URI: http://researchonline.ljmu.ac.uk/id/eprint/8720

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