Eccentric Exercise Reduces Upper Trapezius Muscle Stiffness Assessed by Shear Wave Elastography and Myotonometry
In this study, we tested the hypotheses that unaccustomed eccentric exercise (ECC) would reduce the elastic modulus and dynamic stiffness of the upper trapezius muscle and that these changes would correlate with increases in muscle thickness, reflecting muscle edema. Shear wave elastography was used...
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Frontiers Media S.A.
2020-08-01
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| Series: | Frontiers in Bioengineering and Biotechnology |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fbioe.2020.00928/full |
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| author | Aleksandra Kisilewicz Pascal Madeleine Zofia Ignasiak Bogdan Ciszek Adam Kawczynski Ryan Godsk Larsen |
| author_facet | Aleksandra Kisilewicz Pascal Madeleine Zofia Ignasiak Bogdan Ciszek Adam Kawczynski Ryan Godsk Larsen |
| author_sort | Aleksandra Kisilewicz |
| collection | DOAJ |
| description | In this study, we tested the hypotheses that unaccustomed eccentric exercise (ECC) would reduce the elastic modulus and dynamic stiffness of the upper trapezius muscle and that these changes would correlate with increases in muscle thickness, reflecting muscle edema. Shear wave elastography was used to measure elastic modulus, dynamic stiffness was assessed using myotonometry, and muscle thickness was measured using ultrasonography. All measurements were performed at four locations over the upper trapezius before and 24 h after a single bout of ECC. Fourteen healthy participants (11 males and 3 females; 23.2 ± 3.0 years; height 175.1 ± 10.4 cm; body mass 73.8 ± 11.3 kg) took part in the study. Overall, ECC resulted in decreased elastic modulus (from 45.8 ± 1.6 to 39.4 ± 1.2 kPa, p < 0.01) and dynamic muscle stiffness (from 369.0 ± 7.3 to 302.6 ± 6.0 N/m, p < 0.01). Additionally, ECC resulted in increased muscle thickness (from 6.9 ± 0.4 to 7.3 ± 0.4 mm, p < 0.01). Spatial changes (across the four locations) were found for elastic modulus, stiffness and thickness. No significant correlations were found between changes in measures of muscle stiffness, or between changes in stiffness and changes in thickness. In conclusion, the present pilot study showed that ECC altered biomechanical muscle properties, reflected by decreased elastic modulus and dynamic muscle stiffness 24 h after ECC. |
| first_indexed | 2024-12-11T06:48:41Z |
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| institution | Directory Open Access Journal |
| issn | 2296-4185 |
| language | English |
| last_indexed | 2024-12-11T06:48:41Z |
| publishDate | 2020-08-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Bioengineering and Biotechnology |
| spelling | doaj.art-2fd4872d77cd422ea8ea45f9f3c9f6f22022-12-22T01:16:59ZengFrontiers Media S.A.Frontiers in Bioengineering and Biotechnology2296-41852020-08-01810.3389/fbioe.2020.00928562021Eccentric Exercise Reduces Upper Trapezius Muscle Stiffness Assessed by Shear Wave Elastography and MyotonometryAleksandra Kisilewicz0Pascal Madeleine1Zofia Ignasiak2Bogdan Ciszek3Adam Kawczynski4Ryan Godsk Larsen5Department of Paralympics Sports, University School of Physical Education, Wrocław, PolandSport Sciences – Performance and Technology, Department of Health Science and Technology, Aalborg University, Aalborg, DenmarkDepartment of Biostructure, University School of Physical Education, Wrocław, PolandDepartment of Descriptive and Clinical Anatomy, Medical University of Warsaw, Warsaw, PolandDepartment of Paralympics Sports, University School of Physical Education, Wrocław, PolandSport Sciences – Performance and Technology, Department of Health Science and Technology, Aalborg University, Aalborg, DenmarkIn this study, we tested the hypotheses that unaccustomed eccentric exercise (ECC) would reduce the elastic modulus and dynamic stiffness of the upper trapezius muscle and that these changes would correlate with increases in muscle thickness, reflecting muscle edema. Shear wave elastography was used to measure elastic modulus, dynamic stiffness was assessed using myotonometry, and muscle thickness was measured using ultrasonography. All measurements were performed at four locations over the upper trapezius before and 24 h after a single bout of ECC. Fourteen healthy participants (11 males and 3 females; 23.2 ± 3.0 years; height 175.1 ± 10.4 cm; body mass 73.8 ± 11.3 kg) took part in the study. Overall, ECC resulted in decreased elastic modulus (from 45.8 ± 1.6 to 39.4 ± 1.2 kPa, p < 0.01) and dynamic muscle stiffness (from 369.0 ± 7.3 to 302.6 ± 6.0 N/m, p < 0.01). Additionally, ECC resulted in increased muscle thickness (from 6.9 ± 0.4 to 7.3 ± 0.4 mm, p < 0.01). Spatial changes (across the four locations) were found for elastic modulus, stiffness and thickness. No significant correlations were found between changes in measures of muscle stiffness, or between changes in stiffness and changes in thickness. In conclusion, the present pilot study showed that ECC altered biomechanical muscle properties, reflected by decreased elastic modulus and dynamic muscle stiffness 24 h after ECC.https://www.frontiersin.org/article/10.3389/fbioe.2020.00928/fulleccentric exercisetrapezius musclemuscle stiffnessultrasonographymyotonometry |
| spellingShingle | Aleksandra Kisilewicz Pascal Madeleine Zofia Ignasiak Bogdan Ciszek Adam Kawczynski Ryan Godsk Larsen Eccentric Exercise Reduces Upper Trapezius Muscle Stiffness Assessed by Shear Wave Elastography and Myotonometry Frontiers in Bioengineering and Biotechnology eccentric exercise trapezius muscle muscle stiffness ultrasonography myotonometry |
| title | Eccentric Exercise Reduces Upper Trapezius Muscle Stiffness Assessed by Shear Wave Elastography and Myotonometry |
| title_full | Eccentric Exercise Reduces Upper Trapezius Muscle Stiffness Assessed by Shear Wave Elastography and Myotonometry |
| title_fullStr | Eccentric Exercise Reduces Upper Trapezius Muscle Stiffness Assessed by Shear Wave Elastography and Myotonometry |
| title_full_unstemmed | Eccentric Exercise Reduces Upper Trapezius Muscle Stiffness Assessed by Shear Wave Elastography and Myotonometry |
| title_short | Eccentric Exercise Reduces Upper Trapezius Muscle Stiffness Assessed by Shear Wave Elastography and Myotonometry |
| title_sort | eccentric exercise reduces upper trapezius muscle stiffness assessed by shear wave elastography and myotonometry |
| topic | eccentric exercise trapezius muscle muscle stiffness ultrasonography myotonometry |
| url | https://www.frontiersin.org/article/10.3389/fbioe.2020.00928/full |
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