Assessing inter-limb asymmetries in soccer players: magnitude, direction and association with performance

Madruga-Parera, Marc, Dos'Santos, Thomas, Bishop, Chris ORCID: https://orcid.org/0000-0002-1505-1287, Turner, Anthony N. ORCID: https://orcid.org/0000-0002-5121-432X, Blanco, David, Beltran-Garrido, Vicente ORCID: https://orcid.org/0000-0001-9286-8453, Moreno-Pérez, Victor and Romero-Rodríguez, Daniel (2021) Assessing inter-limb asymmetries in soccer players: magnitude, direction and association with performance. Journal of Human Kinetics, 79 (1) . pp. 41-53. ISSN 1640-5544 [Article] (doi:10.2478/hukin-2021-0081)

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Abstract

In this study, we aimed to analyze the magnitude and direction of interlimb asymmetries in ankle dorsiflexion range of motion (ROM), power (using iso-inertial devices), and a neuromuscular skill (change of direction). Secondarily, we aimed to determine the relationship between interlimb asymmetry scores for each test and also between these scores and the scores for the different performance tests. Sixteen semiprofessional male soccer players (age: 25.38  6.08 years; body height: 1.78  0.64 m; body mass: 79.5  14.9 kg) participated in this study. We calculated interlimb asymmetries using five tests: ankle dorsiflexion ROM, change of direction (COD 180º), and iso-inertial resistance tasks in the open (leg extension strength (LE), leg curl strength (LC)) and closed (crossover step (CRO)) kinetic chain. Our results showed that asymmetry magnitudes differed between all tests with highest interlimb asymmetries displayed during iso-inertial overloading. In addition, we observed that the direction of asymmetries varied depending on the test-specificity, and that the CRO asymmetries had a negative association with LE and CRO performance. These findings highlight the independent nature of asymmetries and that CRO could be an appropriate test to detect asymmetries related with the performance of soccer-specific actions (such as changes of direction). Practitioners are encouraged to use multiple tests to detect existing interlimb differences according to the specific characteristics of each sport.

Item Type: Article
Research Areas: A. > School of Science and Technology > London Sport Institute > Strength and Conditioning at the London Sport Institute
Item ID: 32923
Notes on copyright: © 2021 Marc Madruga-Parera, Thomas Dos’Santos, Chris Bishop, Anthony Turner, David Blanco, Vicente Beltran-Garrido, Victor Moreno-Pérez, Daniel Romero-Rodríguez
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Useful Links:
Depositing User: Chris Bishop
Date Deposited: 23 Apr 2021 09:39
Last Modified: 06 Aug 2021 06:55
URI: https://eprints.mdx.ac.uk/id/eprint/32923

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