The Reliability of Common Functional Performance Tests within an Experimental Test Battery for the Lower Extremities.

The main aim of this study was to determine the test-retest reliability of an experimental functional test battery: Y-balance test (YBT), single-leg countermovement jump (SLCMJ), single-leg hop for distance (SLH), side-hop (SH), speedy-jump (SJ), agility-T (AT), and lower extremity functional test (LEFT). Secondary aims were (1) to determine the mean range for the limb symmetry index (LSI) and (2) to detect significant differences in performance between test-retest sessions. Twenty-two healthy adults (14 males, 8 females; age 23.