Side-lying hip abduction is an action used during manual muscle testing and is also prescribed as a rehabilitation exercise to improve dynamic single-leg stability. Little is known about the functional cross-over of this activity. The aims of this study were to investigate the relationship between concentric hip abductor strength and performance of the Y-Balance test (YBT). Forty-five recreational gym users (27 male, age 26.2 [8.4] years; 18 female, age 27.4 [7.5] years) had dynamic single-leg stability and concentric hip abductor peak torque assessed in the nondominant limb using a YBT and isokinetic dynamometry, respectively. All components of the YBT had a moderate association with concentric hip abductor torque which were greater in the posteromedial (r = .574, p > .001) and posterolateral (r = .657, p > .001) directions compared to the anterior direction (r = .402, p = .006). Greater concentric hip abductor strength is associated with greater scores on components of the YBT, particularly the posterior reaches.
The Relationship Between Concentric Hip Abductor Strength and Performance of the Y-Balance Test (YBT)
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Peter Francis is with the Musculoskeletal Health Research Group, School of Clinical and Applied Sciences, Leeds Beckett University, Leeds, United Kingdom. Kay Gray is with the Department of Sport and Health Science, University of St. Mark and St. John, Plymouth, United Kingdom. Nic Perrem is with the School of Sport, Health and Applied Science, St Mary’s University, Twickenham, London, United Kingdom. Jeffrey B. Driban, PhD, ATC, CSCS, Tufts University, is the report editor for this article.
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