TABLE 4.

Comparison of Strength and Jump Performance Measures and ≥90% LSI Success^a

	Ipsilateral Injury		Ipsilateral Matched
Test	Mean ± SD	95% CI	Mean ± SD	95% CI	P Value	Effect Size
Quadriceps, N/kg	198 ± 43	180 to 213	200 ± 39	190 to 210	.724	0.08
LSI, %	89.4 ± 11.9	85 to 94	88.1 ± 13.1	85 to 92	.652	0.10
>90% LSI success rate	52		47		.644
Hamstring, N/kg	122.6 ± 25.1	113 to 132	127.1 ± 28.6	120 to 134	.488	0.16
LSI, %	93 ± 14.4	88 to 99	96.5 ± 13.9	93 to 100	.2745	0.24
>90% LSI success rate	45		69		.022b
SLCMJ, cm	9.9 ± 2.8	8.9 to 10.9	9.9 ± 2.6	9.2 to 10.6	.964	0.01
LSI, %	85.4 ± 16.2	79 to 91	86 ± 15.8	82 to 90	.875	0.03
>90% LSI success rate	41		44		.821
SLDJ, cm	9.73 ± 2.8	8.7 to 10.8	9.2 ± 2.7	8.5 to 9.9	.445	0.19
LSI, %	80.1 ± 17.9	73.9 to 87.8	76.3 ± 15.5	72.2 to 80.3	.224	0.28
>90% LSI success rate	25		16		.287
SLHD, cm	148.8 ± 33.8	135 to 162	142.2 ± 23.3	137 to 149	.388	0.21
LSI, %	95.6 ± 14.6	89.5 to 100	95.7 ± 13.7	92.1 to 99.4	.961	0.01
>90% LSI success rate	83		68		.162
>90% LSI success rate for all 4 tests	4		2		.562

^aLSI, limb symmetry index; NRI, no reinjury; RI, reinjury; SLCMJ, single-leg countermovement jump; SLDJ, single-leg drop jump; SLHD, single-leg hop for distance.

^bP < .05.