TABLE 5.

Biomechanical Differences on the ACLR Side Between the RI and NRI Groups^a

			RI Group		NRI Group
Variable	Start, %	End, %	Mean ± SD	95% CI	Mean ± SD	95% CI	P Value	Effect Size
Double-leg drop jump
Knee flexion angle, deg	9	22	52.7 ± 9.7	49.0 to 56.4	47.2 ± 7.1	45.3 to 49.0	.030	0.64
COM to ankle vertical distance, mm/BH	9	29	0.42 ± 0.02	0.41 to 0.43	0.43 ± 0.02	0.42 to 0.44	.027	0.64
	49	74	0.40 ± 0.03	0.39 to 0.41	0.42 ± 0.02	0.41 to 0.43	.017	0.59
Ground contact time, s			0.31 ± 0.09	0.27 to 0.34	0.26 ± 0.05	0.25 to 0.28	.021	0.52
Planned CoD
COM to knee posterior, mm	0	12	−11.1 ± 60.3	−34.1 to 11.8	−60.1 ± 72.5	−79.3 to −40.8	.025	0.66
	26	34	18.9 ± 56.9	−2.7 to 40.5	−23.3 ± 66.2	−40.9 to −5.8	.037	0.63
	54	63	66.1 ± 62.2	42.4 to 89.7	15.8 ± 74.1	−3.8 to 35.5	.033	0.67
	82	93	163 ± 68.4	137.1 to 189.1	112.6 ± 80.1	91.4 to 133.9	.028	0.62
Unplanned CoD
Anterior pelvic tilt, deg	42	90	2.1 ± 7.0	−0.7 to 4.8	7.0 ± 7.4	5.1 to 9.0	.009	0.63

^aACLR, anterior cruciate ligament reconstruction; BH, body height; CoD, change of direction; COM, center of mass; NRI, no reinjury; RI, reinjury.