Performance and reliability of the Y-Balance Test™ in high school athletes.

Background: Lower extremity injuries account for 32.9% of the overall injuries in high school athletes. Previous research has suggested that asymmetry greater than 4 cm using the Y-Balance Test™ Lower Quarter (YBT-LQ) in the anterior direction is predictive of non-contact injuries in adults and collegiate athletes.

Performance of high school male athletes on the Functional Movement Screen™.

Objectives: (1) Describe the performance of the Functional Movement Screen™ (FMS™) by reporting the proportion of adolescents with a score of ≤14 and the frequency of asymmetries in a cross-sectional sample; (2) explore associations between FMS™ to age and body mass, and explore the construct validity of the FMS™ against common postural stability measures; (3) examine the inter-rater and test-retest reliability of the FMS™ in adolescents.

Design: Cross-sectional.

Setting: Field-setting.