Lower Quarter Y-Balance Test Scores and Lower Extremity Injury in NCAA Division I Athletes

Wilson C Lai, Dean Wang, James B Chen, Jeremy Vail, Caitlin M Rugg, Sharon L Hame, Wilson C Lai, Dean Wang, James B Chen, Jeremy Vail, Caitlin M Rugg, Sharon L Hame

Abstract

Background: Functional movement tests that are predictive of injury risk in National Collegiate Athletic Association (NCAA) athletes are useful tools for sports medicine professionals. The Lower Quarter Y-Balance Test (YBT-LQ) measures single-leg balance and reach distances in 3 directions.

Purpose: To assess whether the YBT-LQ predicts the laterality and risk of sports-related lower extremity (LE) injury in NCAA athletes.

Study design: Case-control study; Level of evidence, 3.

Methods: The YBT-LQ was administered to 294 NCAA Division I athletes from 21 sports during preparticipation physical examinations at a single institution. Athletes were followed prospectively over the course of the corresponding season. Correlation analysis was performed between the laterality of reach asymmetry and composite scores (CS) versus the laterality of injury. Receiver operating characteristic (ROC) analysis was used to determine the optimal asymmetry cutoff score for YBT-LQ. A multivariate regression analysis adjusting for sex, sport type, body mass index, and history of prior LE surgery was performed to assess predictors of earlier and higher rates of injury.

Results: Neither the laterality of reach asymmetry nor the CS correlated with the laterality of injury. ROC analysis found optimal cutoff scores of 2, 9, and 3 cm for anterior, posteromedial, and posterolateral reach, respectively. All of these potential cutoff scores, along with a cutoff score of 4 cm used in the majority of prior studies, were associated with poor sensitivity and specificity. Furthermore, none of the asymmetric cutoff scores were associated with earlier or increased rate of injury in the multivariate analyses.

Conclusion: YBT-LQ scores alone do not predict LE injury in this collegiate athlete population. Sports medicine professionals should be cautioned against using the YBT-LQ alone to screen for injury risk in collegiate athletes.

Keywords: Y-balance test; collegiate athlete; injury prevention; injury screening; sports.

Conflict of interest statement

The authors declared the they have no conflicts of interest in the authorship and publication of this contribution.

Figures

Figure 1.
Figure 1.
Laterality of reach asymmetry vs laterality of injury. AE, athlete-exposure; L, left; R, right.

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Source: PubMed

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