Table 5. Relationship between quadriceps extension 60º/sec limb symmetry index (LSI), single-leg vertical jump, and single-leg medial rotation hop LSI with cutoff of 90% LSI.

		Extension 60º/sec LSI						Extension 180º/sec LSI
		< 90%	≥ 90%	Sum				< 90%	≥ 90%	Sum
SLVJ LSI	< 90%	11	2	13		SLMRH LSI	< 90%	6	0	6
	≥ 90%	4	9	13			≥ 90%	9	11	20
	Sum	15	11	26			Sum	15	11	26
p =0.015						p=0.017

Abbreviations: LSI, limb symmetry index; SLMRH, single-leg medial rotation hop; SLVJ, single-leg vertical jump