Vertical and horizontal asymmetries are related to slower sprinting and jump performance in elite youth female soccer players

Bishop, Chris ORCID:, Read, Paul, McCubbine, Jermaine and Turner, Anthony N. ORCID: (2021) Vertical and horizontal asymmetries are related to slower sprinting and jump performance in elite youth female soccer players. Journal of Strength and Conditioning Research, 35 (1) . pp. 56-63. ISSN 1064-8011 [Article] (doi:10.1519/JSC.0000000000002544)

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Inter-limb asymmetries have been shown to be greater during vertical jumping compared to horizontal jumping. Notable inter-limb differences have also been established at an early age in male youth soccer players. Furthermore, given the multi-planar nature of soccer, establishing between-limb differences from multiple jump tests is warranted. At present, a paucity of data exists regarding asymmetries in youth female soccer players and their effects on physical performance. The aims of this study were to quantify inter-limb asymmetries from unilateral jump tests and examine their effects on speed and jump performance. Nineteen elite youth female soccer players performed a single leg countermovement jump (SLCMJ), single, triple, and crossover hops for distance and a 20 m sprint test. Test reliability was good to excellent (ICC = 0.81-0.99) and variability acceptable (CV = 1.74-5.42%). A one-way ANOVA highlighted larger asymmetries from the SLCMJ compared to all other jump tests (p < 0.05). Pearson’s correlations portrayed significant relationships between vertical asymmetries from the SLCMJ and slower sprint times (r = 0.49-0.59). Significant negative relationships were also found between horizontal asymmetries during the triple hop test and horizontal jump performance (r = -0.47 to -0.58) and vertical asymmetries during the SLCMJ and vertical jump performance (r = -0.47 to -0.53). The results from this study highlight that the SLCMJ appears to be the most appropriate jump test for identifying between-limb differences with values ~12% showing negative associations with sprint times. Furthermore, larger asymmetries are associated with reduced jump performance and would appear to be direction-specific. Practitioners can use this information as normative data to be mindful of when quantifying inter-limb asymmetries and assessing their potential impact on physical performance in youth female soccer players.

Item Type: Article
Research Areas: A. > School of Science and Technology > London Sport Institute > Strength and Conditioning at the London Sport Institute
Item ID: 23569
Notes on copyright: This is a non-final version of an article published in final form in:
Bishop, Chris; Read, Paul; McCubbine, Jermaine; Turner, Anthony, Vertical and Horizontal Asymmetries Are Related to Slower Sprinting and Jump Performance in Elite Youth Female Soccer Players, Journal of Strength and Conditioning Research: January 2021 - Volume 35 - Issue 1 - p 56-63 doi: 10.1519/JSC.0000000000002544
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Depositing User: Chris Bishop
Date Deposited: 19 Feb 2018 14:15
Last Modified: 05 Feb 2021 10:30

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