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Prevalence and magnitude of preseason clinically-significant single-leg balance and hop test asymmetries in an English adult netball club

Clark, Nicholas C and Mullally, Elaine M (2019) 'Prevalence and magnitude of preseason clinically-significant single-leg balance and hop test asymmetries in an English adult netball club.' Physical Therapy in Sport, 40. 44 - 52. ISSN 1466-853X

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Abstract

Objectives Side-to-side asymmetry of lower-limb motor-performance is associated with increased noncontact injury risk in agility-sports. Side-to-side symmetry-analyses using single-leg balance and hop tests has not been reported for community-level adult netball players. The purpose of this study was to perform preseason side-to-side symmetry-analyses using eyes-closed-balance (ECB), triple-hop-for-distance (THD), single-hop-for-distance (SHD), and vertical-hop (VH) tests. Design Cross-sectional; Setting Community-level adult netball club. Participants Twenty-three female players (age 28.7 ± 6.2yr; height 171.6 ± 7.0 cm; mass 68.2 ± 9.8 kg). Main outcome measures Right-left group-level comparisons (paired t-test) and individual-level comparisons (absolute-asymmetry (%)). A limb symmetry index was calculated for each test and a clinically-significant absolute-asymmetry defined as >10%. Clinically-significant absolute-asymmetry prevalence (%) was computed for each test. Results There were no right-left significant differences for any test. Maximum absolute-asymmetries for the ECB, THD, SHD, and VH were 93.3%, 15.2%, 16.7%, and 60.3%, respectively. The prevalence of clinically-significant absolute-asymmetries for the ECB, THD, SHD, and VH was 91.3%, 8.7%, 8.7%, and 52.2%, respectively. Conclusions Group-level comparisons with statistical tests fail to expose the extent of clinically-significant absolute-asymmetries. Most players demonstrated preseason clinically-significant absolute-asymmetries for the ECB and VH tests. Preseason clinically-significant absolute-asymmetries that may predispose increased lower-limb noncontact injury risk are widespread in a community-level adult netball club.

Item Type: Article
Uncontrolled Keywords: Netball, Balance test, Hop test, Limb symmetry index
Divisions: Faculty of Science and Health > Sport, Rehabilitation and Exercise Sciences, School of
Depositing User: Elements
Date Deposited: 28 Aug 2019 14:50
Last Modified: 13 Sep 2019 09:15
URI: http://repository.essex.ac.uk/id/eprint/25209

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